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Dublin Institute for Advanced StudiesInstitiúid Ard-Léinn Bhaile Átha Cliath

RESEARCH REPORT 2005

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Dublin Institute for Advanced Studies research report 2005

Contents

School of Celtic Studies� Research Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.1 Taighde/Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

1.2 Meamram Páipéar Ríomhaire/Irish Script on Screen (ISOS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.3 Tionscnamh Bibleagrafaíochta/Bibliography project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.4 Eagarthóireacht/Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.5 Foilsitheoireacht/Publishing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Díolachán leabhar/Sale of books . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7 Foilseacháin/Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.8 Leabharlann/Library . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.9 Imeachtaí/Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.10 Léachtaí (foireann agus scoláirí)/Lectures (staff and scholars) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.11 Cúrsaí in ollscoileanna Éireannacha/Courses in Irish universities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.12 Scrúdaitheoireacht sheachtarach, etc./External examining etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.13 Na meáin chumarsáide agus aithne phoiblí/Media and public awareness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.14 Coistí seachtracha/Outside committees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.15 Cuairteoirí agus Comhaltaí/Visitors and Associates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

School of Cosmic Physics – Astronomy and Astrophysics� General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . �3

2 Research Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . �3

2.1 Astronomy and Astrophysics Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1.1 IAU Symposium 230: Populations of High Energy Sources in Galaxies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1.2 Gamma-Ray Bursts and the REM Telescope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.1.3 High-resolution Spectroscopy of Circumstellar Matter Surrounding Gamma Ray Bursts . . . . . . . . . . . . . . . . 13

2.1.4 GRB Distance Estimations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.1.5 Studies of Runaway Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.1.6 Studies of B[e] Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1.7 The Intermediate Density Cloud LDN1780 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1.8 Optical Variability of Blazers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1.9 Magnetic Fields in Star Forming Regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1.10 Molecular Cores . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.1.11 Sptizer Observations of Weak-line T Tauri Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.1.12 Measuring Interstellar Extinction from Star Counts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.1.13 The Youngest Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.1.14 Finding Hidden Clusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.1.15 Searching for Outflows from Brown Dwarfs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2

2.1.16 Integral Field Spectroscopy of T Tauri Star Outflows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.1.17 Modelling Infall and Outflow in Young Stars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.1.18 Interacting Jets from Binary Stars and Jet Propagation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.1.19 Non-Ideal MHD Waves and Structure Formation in the ISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.1.20 MHD Simulations of Star-forming Regions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.1.21 Equilibrium and Time-Dependent H2 Emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.1.22 Adaptive Multi-fluid MHD Simulations of Stellar Jets Including Chemical Networks . . . . . . . . . . . . . . . . . . . 20

2.1.23 Adaptive 3D Calculations of Gravitational Instability in Proto-planetary Disks . . . . . . . . . . . . . . . . . . . . . . . 20

2.1.24 2-D/3D Studies of MHD Waves in Isothermal and Thermally Unstable Media . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1.25 2-D/3D Studies of Dense Clumps Interacting with MHD Winds and Shocks . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1.26 The Extinction Power Law in Different Interstellar Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1.27 The Properties of Dust in the Interstellar Medium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.1.28 HESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.29 The Mid-Infrared Instrument (MIRI) for the James Webb Space Telescope . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.1.30 Dublin Numerical Simulations Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.1.31 CosmoGrid and ICHEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.1.32 Understanding Jets through Simulation, Experiment and Theory (JETSET) . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3 . Hamilton Bicentenary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4 . Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

5 . Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.1 Publications (Refereed Journals) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.2 Publications (Non-refereed Journals) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

School of Cosmic Physics – Geophysics� . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2 . General Geophysics Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.1 EuroArray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

2.2 AfricaArray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3 . Electromagnetic Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.1 SAMTEX (Southern African Magnetotelluric Experiment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.2 ISLE-MT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.3 3D MT Modelling/Inversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.4 Slave to Bear MT Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.5 Inkaba yeAfrica . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.6 Marine EM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3


3.7 Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.7.1 Cork AMT Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.7.2 Birr Castle DC Resistivity Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.7.3 INDEPTH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.7.4 Lithoprobe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.7.5 Other and General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

4 . Seismological Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.1 HADES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

4.2 RAPIDS 3 and 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.3 ISLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4.4 EAGLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.5 TRIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

4.6 NABASK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7 The Seismic Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7.2 Maintenance Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7.3 DIAS Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7.4 DSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.7.5 Irish National Seismic Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4.8 Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5 . Geodynamic Modelling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

6 . Technical/Support Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

6.1 Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

6.2 Computer Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7 . Collaboration with Wider Research Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.1 DIAS-UB Collaboration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

7.2 Visitors to the Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

7.3 Other Collaborative Activities by Section members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

8 . Public Outreach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

9 . Training Undertaken . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

�0 . Health and Safety Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

�� . Miscellanea . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

4

School of Theoretical Physics� . Report on Research Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1 Work by Senior Professors and Collaborators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1.1 Anderson Localisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1.2 Long Cycles for Bose-Einstein Condensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1.3 Quantum Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1.4 The Asymmetric Exclusion Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

1.1.5 Quantum Hall Effect in Graphene . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1.1.6 Vanishing Theorems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1.1.7 Integrable Quantum Field Theories and Quantum Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1.1.8 Fuzzy Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1.1.9 Fuzzy Physics and Monte Carlo Simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1.2 Independent Work by Fellows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1.2.1 Theoretical and Computational Studies of Field Theories on Fuzzy Supersymmetric Spaces . . . . . . . . . . . . . 44

1.2.2 Time-Space Non-commutativity and Waves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

1.2.3 Fuzzy and SUSY Fuzzy Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

1.2.4 Gravity Theories on Non-commutative Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

1.2.5 Non-commutative Conformal Symmetries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1.2.6 Fuzzy Cosets of SU(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1.2.7 Regularizing NC QFTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1.2.8 Non-Commutative Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1.2.9 Fuzzy Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

1.2.10 Field Theories on Manin Plane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3 Independent Work by Research Scholars and Students . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.1 The Gross-Pitaevskii Formula and Bose-Einstein Condensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.2 Random Walks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.3 Quantum Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.4 Nonzero Hall Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.5 Bulk Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

1.3.6 Edge Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1.3.7 Quantum Source Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1.3.8 Fuzzy Field Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1.3.9 Lie Algebras . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

1.3.10 String Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

1.4 Work by Research Associates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

1.4.1 The Quantum Hall Effect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

1.4.2 Non-Commutative Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

1.4.3 Higher Dimensional Field Theories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

5


2 Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5�

2.1 Papers in Refereed Journals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.2 Papers in Conference Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.3 Preprints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

3 Programme of Scholarly Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

3.1 Lectures Organised by The School . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

3.1.1 Seminars Organised by the Theoretical Particle Physics Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

3.2 Symposia, Conferences, Workshops Organised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

4 Presentations at Conferences or Seminars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4.1 Talks and Papers Presented . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

5 Collaboration with the Wider Research Community . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.1 National . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

5.2 International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

6 Participation in Outside Committees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

7 Attendance at External Conferences, Workshops, Meetings and Lectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.1 Conferences/Workshops/Scientific Meetings Attended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

7.2 Lectures and Organisational Meetings Attended . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

8 Research Grants/External Funds Secured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6�

9 Honours/Awards/Special Achievements Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

�0 Public Awareness Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.1 Public Lectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

10.2 Contribution to the Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

6

1 Research WorkStaff and ScholarsSenior Professors: Liam Breatnach (Director), Fergus Kelly,

Máirtín Ó Murchú.

Professors: Malachy McKenna, Pádraig Ó Macháin.

Assistant Professors: Aoibheann Nic Dhonnchadha, Siobhán

Ní Laoire (Academic Librarian; to December), Michelle

O Riordan (Publications Officer).

Bibliographer: Alexandre Guilarte (from August).

Dialectologist: Brian Ó Curnáin.

Bergin Fellow: Roisín McLaughlin.

Scholars: Jenifer Ní Ghrádaigh, Nicholas Evans, Eoghan

Ó Raghallaigh, Brent Miles (from October).

Assistant Librarians: Charlotte Dillon, Grace Toland (part-time)

to October, Órla Ní Chanainn (from March).

School Administrator: Eibhlín Nic Dhonncha.

Technical Staff : ISOS: Anne Marie O’Brien.

IT support: Andrew McCarthy (part-time), Gavin McCullagh

(part-time) until August. Stephen McCullagh (part-time) from

August.

� .� Taighde/Research

Dialect Studies

Brian Ó Curnáin continued his work on the Irish of Galway

and Connaught, and carried out field-work in central

Connemara. He worked on the index for his monograph

of The Irish of Iorras Aithneach, Co. Galway. He continued

video recording of children between the ages of two and

five years who have a command of the Irish language in

Connemara. Siobhán Ní Laoire worked on stylistic variation in

Modern Irish (West Galway dialects) within the frameworks of

sociolinguistics and discourse analysis, focussing in particular

on hitherto unreported informal, interactional data and

utilising a comparative, international perspective. Malachy

McKenna continued his work on The Irish of Rann na Feirste:

Phonetics. He researched an article entitled ‘An Index to the

Rann na Feirste material in The Linguistic Atlas and Survey of

Irish Dialects’ for publication in Celtica 25.

Máirtín Ó Murchú continued work on the Gaelic of West

Perthshire.

Textual editions

Roisín McLaughlin prepared her book entitled Studies in Early

Irish Satire for publication. She submitted her PhD thesis,

A Critical Edition of Mittelirische Verslehren III, to Trinity

College Dublin.

Visiting Professor Mark Scowcroft continued his work on

an edition of the second recension of Lebor Gabála Éirenn.

Visiting Professor Nancy Stenson worked on a series of

grammar/exercise books for learning Irish, and an article on

changing meanings of the verb ‘faigh’ in Modern Irish.

Historical studies

Research scholar Jenifer Ní Ghrádaigh continued her

ongoing research into the architecture of twelfth-century

Clonmacnoise and its patrons, artistic connections between

Ireland and Europe in the twelfth century, iconographic

significance of architectural and sculptural features, and the

position of the saer ‘wright’ in early Irish law.

Research scholar Nicholas Evans completed work on a

forthcoming article which should be published in 2006 in

The Journal of Celtic Studies. He has also been researching

and writing chapters for a monograph entitled Recording

and Re-interpreting History in Medieval Irish Chronicles. Three

chapters were completed this year, on ‘The Structuring of

History in the ‘Chronicle of Ireland’, ‘The Chronology of Irish

and Scottish History 431-730’, and ‘The Original Chronology

of the Irish Chronicles, ca 550-730’. Research undertaken

for conference papers in Reading and at the Tionól on the

development of the portrayal of the kingship of Ireland and

the Uí Néill will be used in a forthcoming chapter.

Research scholar Eoghan Ó Raghallaigh continued working on

his thesis entitled Poems from the Nugent Manuscript.

Research scholar Brent Miles began work on a monograph on

the study of Latin epic in Ireland and the classical translations

of Middle Irish.

School of Celtic Studies

7


Michelle O Riordan continued work on her book Irish Bardic

Poetry: Rhetorical Reality to be submitted to Cork University

Press for publication in 2006.

Early Irish legal studies

Fergus Kelly continued his work on edition of a Legal Treatise

attributed to Giolla na Naomh Mac Aodhagáin (d. 1309), and

on an Old Irish text on legal disputes within marriage (Corpus

Iuris Hibernici i 144.5–150.16).

Gerald Manning (Scholar 1999-2002) continued his seminar

at the Institute on the Old-Irish law-text Míadslechtae. Liam

Breatnach continued his seminar on the Old-Irish law-text

Córus Bésgnai. His book, A Companion to to the Corpus Iuris

Hibernici, was published in June.

Cataloguing of manuscripts

Pádraig Ó Macháin began work on correcting and

preparing for publication William Mahon’s catalogue of Irish

Manuscripts in Villanova University, Pennsylvania. Aoibheann

Nic Dhonnchadha carried out research on Early Modern Irish

medical texts.

� .2 Meamram Páipéar Ríomhaire/ Irish Script on Screen (ISOS) Work continued under the direction of Pádraig Ó Macháin.

Digitisation of the Franciscan Collection of Irish Manuscripts

in UCD was completed; these have now been processed and

are on display on the ISOS website. Mac Fhirbhisigh’s ‘Book

of Genealogies’, held in UCD Library (Additional Irish MS 14)

was also digitised, and is now on display. Work began on

upgrading the huge database and archive of digitised material

held by ISOS.

� .3 Tionscnamh Bibleagrafaíochta/ Bibliography projectAlexandre Guilarte continued work leading to the completion

of the fourth volume of the bibliography.

� .4 Eagarthóireacht/EditingFergus Kelly: Co-editor of Celtica 25. He carried out editorial

work on Brynley Roberts, Maxen Wledig, on Alexander

Falileyev, Welsh Walter of Henley, and on Díaz y Díaz, De

Ordine Creaturarum.

Malachy McKenna: Co-editor of Celtica 25;

Liam Breatnach: Co-editor of Ériu 55. He carried out editorial

work on Elmar Ternes, The Phonemic Analysis of Scottish Gaelic.

Aoibheann Nic Dhonnchadha: (with Pádraig Ó Macháin),

An Linn Bhuí: Iris Ghaeltacht na nDéise imleabhar 9.

Michelle O Riordan: Arranged for reprinting School of Celtic

Studies publications.

Pádraig Ó Macháin: Co-editor of An Linn Bhuí: Iris Ghaeltacht

na nDéise imleabhar 8. He founded and edited Ossory,

Laois and Leinster Volume 1, and edited and prepared for

publication Index to Carrigan’s History of the Diocese of

Ossory (Kilkenny).

� .5 Foilsitheoireacht/PublishingAs one of its statutory functions, in addition to research

and publication by its own staff, the School provides for the

assessment, editing, and publishing of books and papers by

outside scholars. The following books were published in 2004:

Liam Breatnach, A Companion to the Corpus Iuris Hibernici,

Early Irish Law Series volume 5, xvi + 499 pp. ISBN 1 85500

184 5.

Brynley F. Roberts, Breudwyt Maxen Wledic, Medieval and

Modern Welsh Series volume 11, xcviii + 81. ISBN 1 85500

182 9.

Reprints

The following reprints were seen through the press by the

School’s Publications Officer, Michelle O Riordan:

F. Kelly, A Guide To Early Irish Law (Catalogue F4.3).

E. Knott, An Introduction To Irish Syllabic Poetry Of The Period

1200—1600 (F3.2)

M. A. O’Brien (ed.), Corpus Genealogiarum Hiberniae (G7.1).

L. Bieler (ed.), Four Latin Lives of St. Patrick: Colgan’s Vita

Secunda, Quarta, Tertia, and Quinta (J2.8).

I. P. Sheldon-Williams (ed.), Iohannis Scotti Eriugenae

Periphyseon (De Diuisione Naturae, Liber Tertius) (J2.11).

8


� .6 Díolachán leabhar/Sale of booksPromotion of publications was effected by the School

Administrator, Eibhlín Nic Dhonncha, through advertising

in Books Ireland, National Concert Hall Annual Brochure,

Comhar, Saol, Foinse, Lá, Conradh na Gaeilge: Clár Seachtain

na Gaeilge, An tOireachtas: Clár na Féile, Lámhleabhar An

Choláiste Ollscoile, Baile Átha Cliath, Library News, and

various articles in national and international newspapers.

� .7 Foilseacháin/PublicationsLiam Breatnach: A Companion to the Corpus Iuris Hibernici,

Early Irish Law Series volume 5, xvi + 499 pp.

‘Miscellanea Hibernica: 1. Old Irish tráigid (ebbs, recedes). 2.

The Simplex serbaid. 3. do-maisi and a Detail of Syncope’,

in Bernadette Smelik, Rijcklof Hofman, Camiel Hamans and

David Cram (eds) A Companion in Linguistics: a Festschrift

for Anders Ahlqvist on the Occasion of his Sixtieth Birthday

(Nijmegen 2005) 141-51.

Nicholas Evans: ‘Irish Chronicles as Sources for the History of

Northern Britain, A.D. 660-800’ The Journal of Celtic Studies

5 (forthcoming). Entries on ‘Áedán mac Gabráin’, ‘Annals and

Chronicles’, ‘Scotti/Scots’, ‘Scottish Influence’, in Medieval

Ireland. An Encyclopedia, ed. Seán Duffy (New York and

London; Routledge).

Fergus Kelly: ‘The Horse in Early Irish Society’, in The Irish

Draught Horse: A History (ed. Mary McGrath and Joan C.

Griffith, The Collins Press, Cork) 30-39 ‘The Use of Ireland’s

Woodland in Medieval Times’, in Ireland’s Native Woodlands

(Conference Proceedings, Galway, 8-11 September 2004,

ed. Cara Doyle) 54-59 (CD-Rom issued in by Woodlands of

Ireland, Cabinteely House, The Park, Cabinteely, Dublin 18).

Malachy McKenna: Seanchas Rann na Feirste: Is fann guth an

éin a labhras leis féin, xvi + 180 pp. + 6 CDs. This publication

was launched in Belfast in November, and in Donegal in

December.

Roisín McLaughlin: ‘A Threat of Satire by Tadhg (mac Dáire)

Mac Bruaideadha’ Ériu 55, 37-57. ‘Metres in Mittelirische

Verslehren III’ Ériu 55, 119-36.

Jenifer Ní Ghrádaigh: ‘Fragments of a Twelfth-Century

Doorway at the Church of St Multose, Kinsale?’, Journal

of the Royal Society of Antiquaries of Ireland 133 (2003)

68-77. ‘Temple Finghin, and Two Unusual Voussoirs from

Clonmacnoise’, Archaeology Ireland, Vol. 19, No. 3 (Autumn

2005) 26-31.

Aoibheann Nic Dhonnchadha: ‘Winifred Wulff (1895-1946):

Beatha agus Saothar’ in Brian Ó Catháin (eag.) Scoláirí Léinn:

Léachtaí Cholm Cille 35 (Maigh Nuad 2005) 191-250.

Pádraig Ó Macháin: ‘More Than Meets the Eye: Some Aspects

of a Digitisation Project’, Irish Society for Archives Newsletter

(March 2005) 1-3. ‘Nessa Ní Shéaghdha’, in Brian Ó Catháin

(ed). Scoláirí Léinn: Léachtaí Cholm Cille 35 (Maigh Nuad) 69-

103. ‘Beatha bheag Dhéagláin’, An Linn Bhuí 9, 22-33. ‘Like

Sun Gone Down: Selections from the Writings of John Canon

O’Hanlon’ (with Tony Delaney, Kilkenny 2005).

Michelle O Riordan: ‘Ireland 1600-1800’, forthcoming in

Palgrave History of Ireland 2007.

� .8 Leabharlann/LibraryThere were over 170 new acquisitions of core titles in Celtic

Studies, including monographs, research reports, festschrifts

and conference proceedings. Additional publications were

supplied through long-established standing orders. The library

appreciates the Institute’s publications exchange partners

and is grateful for the various books received from generous

donors.

The library added four titles to its journals list, which now

exceeds 130 current titles. These were: Gath, Irish Archives,

and two new titles, Ossory, Laois and Leinster and Studi

Celtici. In addition, the library bought the back set of Comhar

from 1942-2000, and the first twelve volumes (for the years

1897 to 1918) of Zeitschrift für celtische Philologie.

To complement the print collection the library established

access to subscription-based electronic resources, including

the Acta Sanctorum database, and the online Brepols

Medieval bibliographies and encyclopaedias.

Staff borrowed over 250 books from the library. Through the

inter-library loan service a further 28 monograph titles and

19 serial articles were supplied to staff. The library made its

9


facilities available to 75 recorded external visitors from Ireland

and abroad. Bibliographic and information requests were

answered by library staff, in person, via correspondence and

over the telephone. Further progress was made in the current

and retrospective cataloguing of the collection.

� .9 Imeachtaí/Events

Statutory Public Lecture

This year’s Statutory Public Lecture was delivered by Professor

Liam Breatnach, Director of the School of Celtic Studies. The

title of the lecture was ‘Mediaeval Irish Law and Mediaeval

Irish Literature’. It was delivered as part of the Tionól 2005,

in Trinity College, Dublin on Friday 18th November to a large

audience (circa 130).

Other Lectures

On Saturday 9th April the School of Celtic Studies hosted

‘Teangeolaíocht na Gaeilge IX’, a one-day conference on Irish

and Scottish Gaelic linguistics.

In cooperation with Cumann Merriman the School organised

and hosted a lecture on the 1st of December as part of the

bicentennial commemoration of the death of Brian Merriman.

The lecture, ‘Cambridge Add. MS 6562: Merriman’s

Manuscript’, was given by Dr. Liam P. Ó Murchú of University

College Cork (Scholar 1975-8).

Tionól 2005

The School’s annual conference, Tionól 2005, was organised

by Professor Pádraig Ó Macháin, assisted by Eibhlín Nic

Dhonncha, and took place on the 18th and 19th November.

Over the two days, a total of eighteen papers was delivered by

scholars representing ten institutions. The attendance at the

Tionól averaged eighty to one hundred people per session.

The following is a list of speakers and papers:

Katja Ritari (University of Helsinki)

‘What makes Irish saints sacred?’.

Marion Deane (University of Ulster)

‘The debate: Feis Tigi Becfholtaig’.

Elizabeth White (University of Cambridge)

‘Scéla na Esérgi: scholastic humanism in medieval Ireland’.

Jenifer Ní Ghrádaigh (School of Celtic Studies)

‘Interpreting a fragmentary legal text on the saer’.

Nicholas Evans (School of Celtic Studies)

‘The Uí Néill and the development of the Early-Medieval

Irish chronicles’.

David Stifter (University of Vienna)

‘Endlicher’s Glossary: a document of Late Gaulish’.

Caomhín Breatnach (NUI, Dublin) ‘Tóruigheacht Dhiarmada

agus Ghráinne; text, transmission and language’.

Peter McQuillan (University of Notre Dame)

‘The idea of “suairceas” in the 17th and 18th centuries in Irish’.

Gerald Manning (NUI, Dublin)

‘On restoring the text of the poem Suidiugad Tige Midchúarta’.

Geraldine Parsons (University of Cambridge)

‘The manuscript tradition of Acallam na Senórach’.

Roisín McLaughlin (School of Celtic Studies)

‘A Middle Irish textbook on Auraicept na hÉces’.

Morfydd Owen (Centre for Advanced Welsh and

Celtic Studies, Aberystwyth, Wales)

‘Gael agus Gall agus Breatnach: the poetry of

Hywel ab Owain Gwynedd’.

Caroline McGrath (University of Ulster)

‘The apple in early Irish literature’.

Jim Doherty (Trinity College, Dublin)

‘The Stella Maris error’.

Donnchadh Ó Corráin (NUI, Cork)

‘The Irish nota .h. for Ua, Uí etc.: an explanation’.

Gwenno Angharad Elias, ‘Llyfr Cynyr ap Cadwgan:

the legacy of a medieval family of clerics and lawyers’.

Tom O’Loughlin (University of Wales, Lampeter)

‘The inscription on the Ardagh Chalice: its liturgical setting’.

Neil McLeod (Murdoch University, Australia)

‘The saga of Fergus mac Léti’.

Meidhbhín Ní Úrdail (NUI, Dublin)

‘Athchuairt ar an gCúirt’.

�0


Seminars

Liam Breatnach held a weekly seminar on the Old Irish law-text Córus Bésgnai, as well as a weekly seminar on Old Irish verse.

Gerald Manning held a weekly seminar in Spring on the Old Irish law-text Míadslechtae.

Roisín McLaughlin gave a weekly seminar, beginning in Autumn reading the Middle Irish metrical tract Mittelirische Verslehren III.

� .�0 Léachtaí (foireann agus scoláirí)/ Lectures (staff and scholars) Nicholas Evans: ‘The Uí Néill and the development of the Early Medieval Irish Chronicles’, Tionól, Dublin Institute for Advanced Studies; November. ‘The Use of World Histories in Early Medieval Gaelic Chronicles’, The Medieval Chronicle, Reading; July. ‘The Chronology of Irish and Scottish History, 431-730’, Conference of Irish Medievalists, Kilkenny; June.

Fergus Kelly: ‘Trouble at home: a early Irish law-text on disputes within marriage’, 27th Annual California Celtic Studies Conference, University of California, Berkeley; March. ‘Grain-crops, vegetables and cultivated fruit in Early Christian Ireland: the continental connection’, École des Hautes Études en Sciences Sociales, Paris; May. ‘Bechbretha and bee-keeping in ancient Ireland’, Apimondia Ireland 2005: World Conference of bee-keepers, Royal Dublin Society; August.

Jenifer Ní Ghrádaigh: ‘Interpreting a fragmentary legal text on the saer’, Tionól 2005 Dublin Institute for Advanced Studies; November. ‘Bishop, king, queen: pawns and players in Irish Romanesque architecture’, Hunt Museum Medieval lecture series; November. ‘Romanesque eclecticism: Irish artistic contacts with Wales and the Welsh Marches’, The March in the Medieval West: NUI, Dublin; September. ‘A Spiritual investment: Patronage and Workshop in the Irish Romanesque’, Making and Meaning: the 5th International Conference of Insular Art: Trinity College Dublin; August. ‘What is particularly Irish about Irish Romanesque: Architecture and its Sculpture’, 2nd Annual Irish Lecture, Morley College London; May.

Aoibheann Nic Dhonnchadha: ‘Winifred Wulff (1895-1946): Beatha agus Saothar’ Léachtaí Cholm Cille, Ollscoil na hÉireann, Maigh Nuad; April.

Brian Ó Curnáin: ‘“Críost lér gineadh as”, an clásal coibhneasta san ardréim in Iorras Aithneach’, Comhdháil Teangeolaíocht na Gaeilge IX, Scoil an Léinn Cheiltigh; April.

Pádraig Ó Macháin: ‘The life and work of John Canon O’Hanlon’, Laois Heritage Society; May. ‘Eirke, Fertagh and Glashare’, Kilkenny Archaeological Society; May. ‘A mhná guileam tré Ghlais Áir’, Mullinahone Kickham Weekend; August. ‘Stradbally, St. Louis, and Sandymount: the life and work of John Canon O’Hanlon’, Royal Irish Academy; September.

� .�� Cúrsaí in ollscoileanna Éireannacha/Courses in Irish universitiesNicholas Evans tutored first-year History at National University of Ireland, Dublin.

Fergus Kelly gave a weekly lecture on ‘Early Irish law’, to second and third year students, School of Irish, Trinity College Dublin (Michaelmas term).

Malachy McKenna gave two courses in the School of Irish, Trinity College, Dublin: (i) Canúintí na Nua-Ghaeilge and (ii) Bunfhoghraíocht na Nua-Ghaeilge.

Eoghan Ó Raghallaigh gave a course on Palaeography to 4th year students in Trinity College, Dublin.

Michelle O Riordan chaired a session of the Memory and History Seminar in the Institute of Irish Studies in Queen’s University Belfast and delivered a post-graduate Seminar on readings of Irish bardic poetry to the Doctoral Programme of the Institute of Irish Studies in National University of Ireland, Galway.

� .�2 Scrúdaitheoireacht sheachtarach, etc ./ External examining etc .Liam Breatnach: external examiner, Department of Old and Middle Irish, NUI Maynooth.

Fergus Kelly: external examiner, Department of Old and Middle Irish, School of Irish, National University of Ireland, Galway (PhD thesis); extern member of Selection committee for Chair in Early and Medieval Irish, University College Cork (July); Brian Ó Curnáin: external examiner, NUI, Galway (PhD thesis).

��


� .�3 Na meáin chumarsáide agus aithne phoiblí/Media and public awareness

Website of the School of Celtic Studies

The school of Celtic Studies website (www.scs.dias.ie)

continued to develop under the direction of Professor Pádraig

Ó Macháin and Andrew McCarthy. There was an increase

of 40% on the number of visitors to the site. The main

development this year was the inclusion on the site of the

Database of Bardic Poetry, compiled over many years by Dr

Katharine Simms of Trinity College, Dublin and generously

made available to the School by her.

Television and radio

Malachy McKenna was interviewed on the programme Blas

for BBC Radio Northern Ireland about his publication Seanchas

Rann na Feirste. The five hundred copies of his publication

were sold out within four months of the first launch.

Pádraig Ó Macháin took part in various interviews throughout

the year on Raidió Teilifís Éireann and Raidió na Gaeltachta.

Brian Ó Curnáin took part in various interviews on Raidió na

Gaeltachta in connection with his research on Mionlach agus

an Caisleán Gearr, Gaillimh.

Michelle O Riordan assisted with background material for a

television production on the Flight of the Earls.

� .�4 Coistí seachtracha/Outside committeesJenifer Ní Ghrádaigh: Honorary General Secretary of the Royal

Society of Antiquaries of Ireland.

Aoibheann Nic Dhonnchadha: Ball de Choiste Náisiúnta Léann

na Gaeilge, Acadamh Ríoga na hÉireann.

Pádraig Ó Macháin: Member of the Editorial Advisory Board,

Journal of Celtic Studies.

� .�5 Cuairteoirí agus Comhaltaí/ Visitors and Associates

Visiting Professors

Professor Eric Hamp (University of Chicago).

Professor Mark Scowcroft (Catholic University of America).

Professor Nancy Stenson (University of Minnesota, USA).

Professor Brynley F. Roberts (former Director of the National

Library of Wales).

Professor Markku Filppula (University of Joensuu, Finland.

Professor Neil McLeod (Murdoch University, Western Australia).

Professor James McCloskey (University of California, Santa Cruz).

Research Associates

Dr Gwenllian Awbery, University of Wales, Cardiff (1990)

Dr John Carey, National University of Ireland, Cork (1990)

Professor Thomas Charles-Edwards, University of Oxford (1990)

Professor Toshio Doi, Nagoya Women’s University (1991)

Professor David N. Dumville, University of Aberdeen (1989)

Professor D. Ellis Evans, University of Oxford (1990)

Professor William Gillies, University of Edinburgh (1989)

Professor Geraint Gruffydd, Centre for Advanced Welsh and

Celtic Studies, Aberystwyth (1989)

Professor Eric P. Hamp, University of Chicago (1989)

Dr Anthony Harvey, Royal Irish Academy (2004)

Professor Michael Lapidge, University of Cambridge (1988)

Professor Donald MacAulay, University of Glasgow (1989)

Professor James McCloskey, University of California, Santa

Cruz (2004)

Professor Toshitsugu Matsuoka, Hosei University, Tokyo (1991)

Dr Martin McNamara, MSC, Milltown Institute of Theology

and Philosophy (1989)

An tOllamh Tomás Ó Con Cheanainn, Ollscoil na hÉireann,

Baile Átha Cliath (1991)

An tOllamh Donnchadh Ó Corráin, Coláiste na hOllscoile,

Corcaigh (1991)

An tOllamh Ruairí Ó hUiginn, Ollscoil na hÉireann,

Má Nuad (1999)

Professor Pádraig Ó Néill, The University of North Carolina at

Chapel Hill (1990)

Dr Brynley F. Roberts, National Library of Wales, Aberystwyth

(1990)

Professor R. Mark Scowcroft, Catholic University of America

(1990)

Professor Richard Sharpe, University of Oxford (1988)

Professor Robert L. Thomson, University of Leeds (1991)

Professor Calvert Watkins, Harvard University (1990)

Professor Morfydd Owen, Centre for Advanced Celtic and

Welsh Studies (2003)

Dr Tom O’Loughlin, University of Wales, Lampeter (2003)

�2


Scoláirí Cuairte / Visiting Scholars

Overseas scholars (apart from those listed above under

Visiting Professors) who availed of library and research

facilities are included in the following list. In addition to these,

the School accords library and research facilities to Irish-based

scholars when it holds materials which are lacking in the

scholars’ own institutions and in the major libraries in Dublin.

Professor Thomas Charles Edwards (Jesus College Oxford)

Amy Eichhorn-Mulligan (University of Oxford)

Máire Ní Mhaonaigh (St. John’s College, Cambridge)

Bronagh Ní Chonaill (University of Glasgow)

Matthew Hammond (University of Glasgow)

Professor William Gillies (University of Edinburgh)

Clare Downham (University of Aberdeen)

Pia Dewar (University of Aberdeen)

Dr Thomas O’Loughlin (University of Wales, Lampeter)

Jonathan Wooding (University of Wales, Lampeter)

Morfydd Owen (Aberystwyth)

Dr Jacqueline Borsje (University of Utrecht, The Netherlands)

Patricia Ronan (Bonn University)

Johan Corthals (University of Hamburg)

Stefan Schumacher (University of Vienna)

Silvia Schwaerzler (University of Vienna)

Dr David Stifter (University of Vienna)

Christine Oberaller (University of Innsbruck)

Dr Melita Cataldi (University of Turin)

Piero De Gennaro (Turin, Italy)

Father Chrysostom (Koutloumous Monastery, Greece)

Kicki Ingridsdotter (University of Uppsala, Sweden)

Johan Larsson (University of Uppsala)

Micheál Ó Flaithearta (University of Uppsala)

Nina Chekhonadskaya (Moscow State University)

Dr Lisabeth Buchelt (Boston College, USA)

Dr Mary Valante (Appalachian State University, USA)

Margo Griffin-Wilson (USA)

Mary Valante (Appalachian State University)

Diana Delia White (Rhode Island College)

Pádraig Ó Néill (University of North Carolina)

Itisako Itosoi (Tokyo, Japan)

Toshi Matsuoka (Hosei University, Tokyo)

�3


School of Cosmic Physics – Astronomy and Astrophysics1. GeneralIn 2005 the process of merging the previously separate

Astronomy and Astrophysics sections began in earnest

although lack of good quality office space prevented all of

the staff from Dunsink Observatory being moved to Merrion

Square. It is hoped this problem will be overcome in 2006

with the availability of new premises. The EU funded JETSET

project, led by the section, began in February. The project

is for four years and employs twenty postdoctoral fellows

and PhD students (three at DIAS) throughout Europe. The

Professorship in Astronomy was advertised widely and

attracted an excellent field. Interviews for the position were

held in November and Dr. Felix Aharonian, of the Max Planck

Institute for Nuclear Physics in Heidelberg, accepted the offer

of the post. Dr. Aharonian will commence working in the

section in the autumn of 2006.

2. Research Work

2 .� Astronomy and Astrophysics Activities

2.1.1 IAU Symposium 230: Populations of High Energy

Sources in Galaxies

E.J.A. Meurs, C. O’Maoileidigh, C. Woods

Activities in Astronomy were dominated throughout the first

half of the year by the preparations for IAU Symposium No

230, then the Symposium itself in the 3rd week of August

(held in Dublin Castle with the kind support of the Minister

for Education and Science), and subsequently by the editing

of the Proceedings. The Symposium, on ‘Populations of high

energy sources in galaxies’ was regarded by the participants

as highly successful and the Proceedings are expected to

become a valuable reference work. A well-attended public

talk was given by the renowned astrophysicist, Prof. Geoffrey

Burbidge, on the Tuesday evening of the week of the

Symposium, organized by the Symposium’s Local Organizing

Committee in collaboration with the RIA and the Irish Times.

Participants at IAU Symposium 230 gathered in the courtyard of Dublin Castle

2.1.2 Gamma-Ray Bursts and the REM Telescope

E.J.A. Meurs, P. Ward, S. Vergani with B. McBreen (UCD),

L. Norci (DCU) and F. Zerbi, G. Chincarini and E. Molinari

(Brera Observatory)

Work on Gamma Ray Bursts, the most energetic explosive

events in the Universe, has become well established over the

last few years. Astronomy students (P. Ward and S. Vergani)

have regularly supervised the operation of the automatic

REM telescope in La Silla, working from Dunsink Observatory

as well as from their homes (since night alerts have to be

followed up as soon as possible). Gamma Ray Burst alerts

come largely from the dedicated ‘Swift’ high energy satellite.

Besides Gamma Ray Burst follow-up observations, the REM

telescope carries out regular monitoring observations, for

instance of specific types of galaxies with active nuclei in their

centres.

2.1.3 High-resolution Spectroscopy of Circumstellar

Matter Surrounding Gamma Ray Bursts

P. Ward, S. Vergani and E.J.A. Meurs with L. Norci (DCU) and

F. Fiore (Rome Astronomical Observatory)

Gamma Ray Bursts for which a so-called Afterglow is

detected, lasting for days to months after the burst itself,

are in some cases so bright that high-resolution (‘echelle’-)

spectroscopy can be performed. This provides us with the

means to probe the circumburst environment in great detail,

showing generally a clumped gas distribution with various

velocities relative to the burst itself. This provides highly

interesting diagnostics for the possible progenitor stars

�4

that exploded in a Gamma Ray Burst. After a first extensive

analysis, of GRB 021004, had been completed, new data

for another couple of bright Afterglows have been secured

during the year. The latter spectra allow the detection of

atomic fine-structure lines, which are an important diagnostic

for the density of the absorbing medium.

Part of high-resolution spectrum of Afterglow GRB 021004 showing six CIV doublets at redshifts around 2.3, indicating a kinematically structured circumburst medium.

2.1.4 GRB Distance Estimations

P. Ward and E.J.A. Meurs

Recent work has suggested that Gamma Ray Bursts have the

potential to be used as standard candles. Taking into account

that the emission from GRBs is not isotropic but rather is

beamed within a cone, a quantity Q may be defined that

incorporates as few observable burst parameters as possible

and is directly dependent on the distance (quoted in terms

of the redshift). The relationship that is obtained in this way

has the potential to estimate distances for GRBs for which

no Afterglow was observed. (Normally, when an Afterglow

is detected, the redshift can be measured, for example via

spectroscopy.)

2.1.5 Studies of Runaway Stars

C. O’Maoileidigh and E.J.A. Meurs with L. Norci (DCU) and

M. Wilkinson (IoA, Cambridge)

In a feasibility study regarding the upcoming astrometric

‘Gaia’ satellite, it was shown that for roughly one-tenth of

the known High Mass X-ray binaries (stellar systems consisting

of a massive normal and a collapsed companion, a so-called

neutron star), it can be expected to infer the presence of the

compact companion from the orbital wobble observed for

the normal star in the system (due to the two stars being in

orbit around each other). This will open the way to accurate

mass determinations for the neutron stars in these binaries,

as well as precise orbital parameters for the systems as such.

This study was further expanded to consider also the wobble

detection capability of a ‘SuperGaia’ astrometric satellite,

the concept for which had been submitted to ESA’s ‘Cosmic

Vision’ exercise. For a SuperGaia virtually all known High

Mass X-ray binaries will exhibit detectable wobbles, while

detections will also be possible for X-ray binaries in the

Magellanic Clouds.

Probability to detect orbital wobble for Galactic High Mass X-ray binaries for three generations of astrometric satellites: Hipparchos (0% probability throughout), the upcoming Gaia and a future SuperGaia (the lines above 80% probability). The probabilities are shown as function of the natal kick velocities imparted on the systems by the Supernova explosions that took place in them.

School of Cosmic Physics – Astronomy and Astrophysics

�5


This work emerged naturally from a project on the production

mechanisms for ‘runaway’ stars, massive stars that have

acquired a substantial velocity within our Galaxy. One such

method concerns the Supernova explosions in which neutron

stars are born, which impart substantial velocities to the

system. In a general approach, dynamical simulations of small

stellar groups were carried out with advanced computer

codes, together with consideration of the evolutionary

development of the stars involved.

Results of simulations indicate that the typical velocities of runaway stars (above 30 km/s, horizontal scale) are more likely to be produced by Supernovae occurring in binaries than by dynamical encounters.

2.1.6 Studies of B[e] Stars

E.J.A. Meurs with L. Norci (DCU), V.F. Polcaro and R. Viotti

(INAF/IAS, Rome) and A.S. Miroshnichenko (University of

Toledo, USA)

A particularly interesting star, that has featured notable

periods of X-ray emission in the past, has been studied with

optical spectroscopy. Some emission lines in its spectrum, and

the pattern of variation of these lines, suggest that the X-ray

emission is due to an associated compact companion (neutron

star) around which material ejected from the optically visible

star settles as a so-called accretion disk. The inner parts of

these disks become very hot and can emit X-rays. Further

spectroscopic data on this object have been collected during

the year, leading amongst other things to reconsidering a

proposed classification of this star as a particular sub-type

of Be stars (which are stars of spectral type B that exhibit

emission lines in their spectra).

2.1.7 The Intermediate Density Cloud LDN1780

C. del Burgo with L. Cambresy (Strasbourg Observatory)

Using infrared data from the IRAS and ISO satellites, the

emission from warm and cold components of large dust

grains could be separated for the small and moderately

dense cloud LDN1780. Hα emission has also been observed,

which correlates well with the Vis-band extinction. It is

suggested that the Hα emission results from ionisation by

cosmic ray particles and the infrared emission is due to silicon

nanoparticles.

2.1.8 Optical Variability of Blazers

E.J.A. Meurs, P. Ward and S. Vergani with members of the

REM collaboration

Certain active nuclei of galaxies that reside in elliptical systems

show noticeable variability of their optical light emission.

The REM telescope (see above) has monitored several such

objects. These observations led to the recognition of episodes

with abnormally large light variation for the blazers PKS0537-

441 and 3C454.3, about which the research community was

quickly informed.

2.1.9 Magnetic Fields in Star Forming Regions

R. Curran and T.P. Ray

Molecular clouds are observed to persist for much longer

than their free-fall timescales, suggesting they have some

form of support preventing them from collapse (at least

initially). Thermal pressure is too weak in comparison to the

gravitational stresses in the cloud, and current theory predicts

that the support may come from the magnetic field that

permeates the gas, and/or the pressure of turbulent eddies –

indeed it is likely that these two mechanisms are coupled. We

have used a combination of observations and modelling to

assess the contributions of the magnetic field and turbulence

to the support of clouds.

�6

One of the most direct methods of detecting a magnetic

field is to observe the polarised thermal emission from

cold dust grains that have been aligned by the field, thus

mapping its morphology in the plane of the sky. This method

has been used to study the magnetic field of star forming

regions like DR21(OH) in detail, using our polarimetry data

from the James Clark Maxwell Telescope in conjunction

with, Zeeman measurements of the (line-of-sight) magnetic

field strength and intermediate resolution polarisation maps

observed with the Berkeley-Illinois-Maryland-Association

(BIMA) interferometer array. This has enabled a 3-dimensional

impression of the magnetic field throughout the cloud to be

gained. The magnetic field is found to lie predominantly in

the plane-of-the-sky, in an East-West direction (perpendicular

to the major-axis of the star-forming region, which has a

North-South morphology). The field also remains remarkably

uniform throughout the cloud. These two factors may hint at

an initially strong field and collapse via ambipolar diffusion.

However, analysis of the critical mass-to-flux ratio for this

morphology of cloud/magnetic field indicates that the

magnetic field is unable to prevent collapse.

2.1.10 Molecular Cores

R. Curran and T.P. Ray

Modelling of over twenty cores has been carried out using

both Bonner-Ebert (BE) hydrostatic sphere and Penston-Larson

infall models. This was done by fitting their azimuthally

averaged radial density profiles. Current wisdom states that

caution should be used when fitting hydrostatic models, as

even dynamically evolving cores can appear in “hydrostatic

disguise” and fit BE models well. Nevertheless, the central

densities, scale radii and core radii (the extent of the fit)

can be used as a common metric for both modellers and

observers to characterise the cores. Analysis of the line-of-

sight velocity dispersions calculated from the fit indicates

in most cases larger velocity dispersions than are usually

measured in typical high-mass star forming regions.

Observations to measure the velocity dispersions in a sub-

sample of these cores were recently carried out.

2.1.11 Spitzer Observations of Weak-line T Tauri Stars

À. Gras-Velázquez and T.P. Ray

Data has been acquired from the Cores to Disk (c2-D) Legacy

Program, carried out by the Spitzer Space Telescope (see

figure), to search for disks around weak-line T Tauri stars

(WTTS). These stars are thought to be analogues of the young

Sun during the first few million years of its life. The emphasis

has been on reducing Multi-band Imaging Photometer for

Spitzer (MIPS) data at 24 and 70 microns. Combining these

new data with optical and near-infrared observations, spectral

energy distributions of the WTTS have been constructed to

look for infrared excess emission, tell-tail signatures of disks.

Evidence has been found for circumstellar disks in 20%

of the stars (of a total sample of 30). Interestingly WTTS

selected by their X-ray emission are unlikely to possess disks

while those chosen on the basis of their optical emission

frequently do. Thus X-ray selected WTTS are essentially devoid

of circumstellar matter in contrast to their optically selected

counterparts. This is contrary to the commonly held belief

that all WTTS do not possess disks.

Spitzer Space Telescope. Image courtesy of NASA

2.1.12 Measuring Interstellar Extinction from Star Counts

D. Froebrich, T.P. Ray, G.C. Murphy, and A. Scholz (University

of Toronto)

A study has been made of the distribution of gas and dust

in several star-forming regions by means of near-infrared

(NIR) extinction maps. One important property of dust is how


�7


extinction depends on wavelength. Knowing the so-called

reddening law allows us to use stellar colours to determine

extinction and to measure the mass of gas and dust in a cloud.

We have developed methods to determine the extinction law

based on star counts and colour excess maps. Those methods

have been applied to clouds in Cepheus Ophiuchus and

elsewhere (see figure). A dependence of the extinction law

on the column density of gas and dust was found. This is of

significance for radial density profile analysis of dark clouds.

Extinction (red) in Orion as measured from star counts. The stars of Orion are shown in blue. Image D. Froebrich

2.1.13 The Youngest Stars

D. Froebrich

During the earliest stage of star formation (Class 0) protostars

gain most of their final mass. We have investigated how well

current models are able to predict the observational properties

of these objects. Numerically derived mass accretion rates

from gravo-turbulent simulations were combined with an

evolutionary model of the envelope structure to obtain

model evolutionary tracks for the three main observables

(envelope mass, bolometric temperature and luminosity). A

three dimensional Kolmogorov-Smirnov test was then applied

to quantify the agreement between model predictions and

observation. Monte-Carlo methods were used to constrain

free model parameters. In general rather poor agreement

(70%) of models and observations was found. However, we

can conclude from our investigations that star formation is in

essence a localised and stochastic process, governed in the

majority of regions by turbulence rather than by ambipolar

diffusion and that the Class 0 phase lasts between 20 and 60

thousand years.

2.1.14 Finding Hidden Clusters

D. Froebrich

Most stars form in clusters, embedded in clouds of gas and

dust. We have used star counts based on the 2 Micron All Sky

Survey (2MASS) point source catalogue to obtain a complete

sample of all star clusters in the Galactic Plane with |b<20˚|.

In total1788 cluster candidates were identified of which 86

galactic and 610 open clusters were already known (see figure).

Thus we have found some1092 new cluster candidates. For

all objects radial star density profiles were fitted to obtain the

size, stellar density and number of stars in the cluster. Those

properties were then used to obtain a measure to classify the

new candidates in our sample. It was found that about half of

our new candidates are indeed new open clusters. Furthermore

we found that star clusters are themselves clustered on scales

of about 0.7˚. This corresponds to an increased probability of

finding cluster pairs on spatial scales of 10-25pc, about the size

of typical molecular clouds in the Galaxy.

A newly discovered Milky Way cluster. Image D. Froebrich

2.1.15 Searching for Outflows from Brown Dwarfs

E. Whelan, T.P. Ray, F. Bacciotti (Arcetri), S. Randich (Arcetri),

R. Jayawardhana (University of Toronto)

Brown dwarfs (BDs) are often referred to as “failed stars”

because their mass is insufficient to ignite hydrogen in their

cores: These objects never join the Main Sequence. At the

�8

same time evidence has been growing that these objects

accrete while young just like ordinary protostars. Moreover

it was noticed that in some cases BD optical spectra contain

weak forbidden lines e.g. the [OI] doublet, lines that are

traditional tracers of outflow activity. Theoretically however

we expect any jet or outflow from a BD to be small in angular

size and to be very faint. For these reasons, we applied the

novel technique of spectro-astrometry to the emission lines

to search for an outflow. Our target was ρ-Oph 102, a young

(few million years old) BD of about 60 Jupiter masses deeply

embedded in a star formation region (see figure). Using data

from the Very Large Telescope (VLT) in Chile, we were able

to demonstrate that this BD was in fact driving a jet like

those seen from T Tauri stars albeit on a much smaller scale.

This was the first confirmation that BDs could drive outflows

and resulted in a Nature paper published in June 2005. A

collaborative project to look at other BD outflow candidates

has commenced with Ray Jayawardhana at the University of

Toronto. Proposals to observe more BDs with the VLT were

successful and the observations are scheduled to be carried

out in 2006.

Discovery of the first jet from a brown dwarf ρ-Oph 102 (circled in inset frame). Image courtesy of David Malin, Anglo Australian Telescope.

2.1.16 Integral Field Spectroscopy of T Tauri Star Outflows

E. Whelan and T.P. Ray

Observations of a number of outflows from classical T Tauri

stars (e.g. DG Tau and RW Aur) were obtained with the

integral field spectrometer OASIS on the William Herschel

Telescope on La Palma. The observations were obtained under

good seeing and utilizing the adaptive optic system, so they

are of very high spatial resolution. The data will primarily be

used to provide proper motion information, i.e. to see how

the system evolve with time for comparison with models.

2.1.17 Modelling Infall and Outflow in Young Stars

T. Lery and C. Combet

Work is continuing on developing semi-analytical models

that treat both infall and outflows in a coherent fashion

According to these models, we consider molecular outflows

to be infalling gas that has been deflected outward by the

combination of pressure gradients and magnetic fields when

approaching the central protostar. We have modified the

original self-similar models in order to study the influence of

magnetic field and opacity on the solutions. We found that

outflows can exist without the presence of a magnetic field,

and that infall and outflow rates increase when dust does

not dominate the cooling. A complementary line of research

is currently ongoing to numerically study the stability of

these solutions. This work is still in progress and is performed

by implementing a solution of the model into the FLASH

numerical code. The latter cannot only handle magneto-

hydrodynamic simulations in 3 dimensions but is fully

parallelised and uses Adaptive Mesh Refinement (AMR).

2.1.18 Interacting Jets from Binary Stars and

Jet Propagation

G.C. Murphy and T. Lery

Most solar-like stars form in binary systems. There may thus

be a period, in the life of a young system, when two or more

jets are ejected simultaneously (e.g. as seen in the system

L1551-IRS 5). Simulations of what happens when such jets

interact have been performed. It is found that for plausible

parameters, the interaction can have strong effects on the

flow. The effects of binary rotation, and conditions under

which the jets could merge, have been examined.


�9


A study of jets propagating under free expansion or in an

ambient medium of steeply declining density was carried out

The purpose of this was to explain the highly collimated shape

of astrophysical jets, which may be caused in part or wholly

by the density profile of the ambient medium. In previous

studies the ambient cloud into which a jet propagates has

been treated as a constant density and pressure structure,

whereas in reality it may have a density gradient or cavity.

The cavity may be caused by the joint effects of gravitational

infall and centrifugal force or by previous episodes of strong

ejection from the source.

2.1.19 Non-Ideal MHD Waves and Structure Formation

in the ISM

A. Lim, S. Falle (Leeds) and T. Hartquist (Leeds)

Absorption observations indicate that significant fluctuations

in physical conditions in interstellar clouds exist on scales

comparable to, or even smaller than, the dissipation length

associated with ion-neutral friction. One proposed mechanism

whereby such structure can arise is the non-linear coupling

of the fast and slow MHD wave modes in a magnetically

dominated region. In this model a fast-mode wave can create

dense clumps in regions where the velocity gradient in the

wave is negative, these clumps are typically bounded by slow-

mode shocks and the amount of energy in the slow mode

grows linearly with time.

Simulations have been performed of non-ideal hydromagnetic

wave evolution in which ion-neutral friction plays a major

role. These simulations focus primarily on cases for which the

background thermal pressure is very small compared to the

background magnetic pressure. For initial disturbances with

wavelengths sufficiently large compared to the dissipation

length the generation of high-density contrast structures

is due to slow-mode wave generation following non-linear

steepening of the fast-mode wave. At such wavelengths,

the collisions of structures generated in this fashion leads to

additional density enhancement for some ranges of the initial

wave amplitude. For initial disturbances with sufficiently short

wavelengths, ion-neutral damping results in the presence

of slow-mode waves; for some ranges of parameters, the

dissipation causes higher density contrasts than those found

in the corresponding longer wavelength cases.

Large density contrasts on scales comparable to the

dissipation length are found only in cases in which the

wavelength of the initial perturbation is not too large. This

result indicates that the observed small-scale structures

may arise by the direct driving of rather short wavelength

perturbations. The fact that the short wavelength waves do

not propagate far before they are dissipated suggests that

the decadal variations in absorption features may be due to

phenomena at the surface of clouds where shear boundary

layers are sources of high frequency waves.

2.1.20 MHD Simulations of Star-forming Regions

A. Lim, S. Falle (Leeds) and T. Hartquist (Leeds)

Star-forming regions of the ISM are typically observed to have

a low plasma parameter, ß, and many studies of structure

formation in such regions (including that above) have

assumed magnetically dominated initial conditions. They have

not, however, addressed the question of how such low ß

regions can arise. This work consists of the study of a highly

idealised situation in which a spherical cloud of gas with

moderate ß is compressed by a higher external pressure. Fast

magneto-hydrodynamic shocks are driven into the cloud and

the near the cloud “equator” (with respect to the ambient

magnetic field direction) these have the effect of compressing

the magnetic field lines and raising the magnetic pressure.

Radiative cooling behind these shocks then lowers the gas

pressure leading to a region of low ß. The simulations show

that, for an initial cloud beta of around unity, the cloud

interior could can achieve a ß~0.03, which is a similar value

to that observed in star-forming regions. In addition, the low

ß region is seen to be in a thermally unstable state which is

more conducive to the formation of dense clumps.

The magnetically dominated region is transient in nature

since the cloud must eventually equilibrate its pressure with

it’s surroundings, however for a region the size of a Giant

Molecular Cloud (GMC) the lifetime of the low ß region does

not conflict with the estimates of a few million years for the

ages of the stars seen in observed GMCs.

20

2.1.21 Equilibrium and Time-Dependent H2 Emission

A. Lim, J. Rawlings (UCL), D. A. Williams (UCL) and Stefano

Tine (UCL).

A detailed model of the H2 molecule has been constructed

leading to a time dependent cooling function that accounts

for the effect of the CMB at high redshift. This involves

solving simultaneous differential equations for collisional

(de-) excitation and spontaneous/stimulated emission for all

212 ro-vibrational levels considered in the model. A paper

giving steady state cooling function at various fixed redshifts

is currently being prepared. The steady state cooling rates are

obtained by iterating the above system to equilibrium over

the relevant parameter space and fits to these data compare

well with currently available H2 cooling functions.

This model has been applied to the emission from H2 formed

in the chains of aligned knots that define the beams of

Herbig-Haro jets. These are sometimes observed both in

atomic/ionic as well as in molecular H2 emission lines. Such

objects are modelled as jets with an ejection velocity time-

variability, which produces internal working surfaces that

travel down the jet beam. In a series of axisymmetric gas

dynamic and chemical numerical simulations it was found

that, for variations with an amplitude of ~ 0.1, the internal

working surfaces have appropriate conditions for H2 to be

formed (via negative and positive ion gas phase chemistry)

and H2 fractions as high as ~ 1-10% can be obtained.

This study suggests that the H2 emission observed in the

chains of knots along some HH jets could correspond to

molecules formed in situ within the internal working surfaces

that travel down the jet flow. Future work will involve the use

of the cooling function in a time-dependent manner to study

the level populations and emission from molecular gas in

dynamical situations where equilibrium populations cannot be

assumed both in the current epoch and at high redshift.

2.1.22 Adaptive Multi-fluid MHD Simulations of Stellar

Jets Including Chemical Networks

A. Lim and S. Cabrit (Observatoire Paris, DEMIRM)

Jets from young stellar objects are widely acknowledged to be

useful diagnostics of the star formation process and extensive

numerical investigation of these phenomena has taken place

over the last decade. Previous simulations have usually made

the assumption of pure gas dynamics or ideal MHD, however

there is significant observational evidence that non-ideal effects

may play an important role in the behaviour of stellar jets; for

example, observations of high velocity H2 emission have led

some researchers to look to so-called “C-shocks” in which the

ion-neutral coupling softens the shock discontinuity and may

allow molecular gas to survive into the post-shock region.

With this motivation, an adaptive non-ideal MHD code

is being developed which is able to follow the chemical

evolution of the gas and does not make the assumption that

the inertia of the ionic component is negligible. This code will

first be applied to jets, for which a large volume of previous

work exists and the initial results can be placed in context. In

the future, this code will be applied to regions close to the

protostellar object in which some models have suggested that

ambipolar diffusion is important in the jet launching process.

2.1.23 Adaptive 3D Calculations of Gravitational

Instability in Proto-planetary Disks

A. Lim and M. Picket (Purdue University, Calumet)

Studies of the formation of gas giant planets in self-

gravitating disks has been motivated by the recent explosion

in the detection of extra-solar planets. One mechanism by

which this process can take place is that of gravitational

instability, in which a disk with the right physical conditions

is unstable to the formation of dense self-gravitating

condensations.

This project applies adaptive mesh refinement methods to

simulations of protostellar disks in order to resolve more

clearly the formation of the condensations (which has been

a weakness in previous studies) and address the current

uncertainty as to whether gravitational instability can explain the

current observed preponderance of extra solar gas-giant planets.

The geometry of this problem has led to the development

of a cylindrical adaptive mesh upon which the simulations

will be performed. Comparisons with the Cartesian mesh

will allow any effects due to grid geometry to be identified

and, if necessary, techniques to minimise such effects to be

developed.


2�


2.1.24 2-D/3D Studies of MHD Waves in Isothermal and

Thermally Unstable Media

A. Lim, S.Falle (Leeds) and T. Hartquist (Leeds)

This involves simulations of both isothermal media, in

which the mode-coupling is the primary mechanism for

the formation of density structure, and thermally unstable

media, in which the mode-coupling can serve as a catalyst for

cooling-driven condensation.

Initial results suggest that higher-dimensional effects (such as

wave interference or focussing) make the formation of density

structure significantly more likely than in the one-dimensional

case for given parameters.

2.1.25 2-D/3D Studies of Dense Clumps Interacting with

MHD Winds and Shocks

A. Lim, S.Falle (Leeds) and T. Hartquist (Leeds)

Some of the work described above consists of highly idealised

simulations in which a clump is assumed a priori to be

exposed to an environment of much higher pressure. A more

realistic situation is that in which the clump is exposed to a

bulk flow in its environment. Future work in this area includes

simulations of clumps exposed to MHD shocks and winds to

determine under what conditions a magnetically dominated

region can be generated and the conditions in, and lifetime

of, such a region.

2.1.26 The Extinction Power Law in Different Interstellar

Environments

C. del Burgo and D. Froebrich

A study has been performed of the near-infrared extinction

power-law (assumed extinction Aλ α λ-β) and analysed its

spatial variations for different interstellar environments. These

methods have been applied to study the properties of dust

in the molecular cloud complex LDN 134, where variations in

the dust grain size distribution have been found.

2.1.27 The Properties of Dust in the Interstellar Medium

C. del Burgo, D. Froebrich, L. Cambrésy (Strasbourg

Observatory) and R. Laureijs (ESTEC)

Far-infrared observations from 60 to 200 µm of a region

enclosing the Taurus Molecular Cloud TMC-2, with optical

extinction AV ranging between 0.5 (translucent) to 11

magnitudes (dense) were made. The far-infrared emission was

separated into warm and cold components using ISOPHOT

and IRAS data. This separation is based on the very different

morphologies of the 60 µm and 200 µm emission maps.

The 60 µm emission is used as spatial template of the warm

component, and the 200 µm emission (IV(200)) as a template

for the cold component. The warm component presents

an average colour temperature of approximately 20K. The

cold component is nearly uniform with a mean temperature

of 12.5K in the observed area. The optical depths at 200

µm (τ{200}) of the warm component and cold component

were determined. The ratios IV(200)/AV and τ{200}/AV of the

cold component indicate changes in the optical properties

of the dust grains, with an enhanced far-infrared emissivity

with respect to the big grains in the diffuse interstellar

medium. Comparisons of the emissions and τ{200} of the

cold component with carbon monoxide measurements,

which trace the molecular gas, were carried out. The cold

component emission correlates very well with 13CO (J=1-0)

total intensity. Very good correlations between C18O (J=1-0)

total intensity and especially τ{200} are found for two distinct

regions, one that encloses the core TMC-2 and the other

that corresponds to the northern region and also contains

molecular condensations. These results confirm τ(200) as a

powerful tracer of dense cores with n(H2) ≈104 cm-3, and

that the change in the properties of dust grains takes place at

densities of n(H2) ≈103 cm-3.

Far-infrared observations have also been presented between

60 and 200 µm and a near-infrared extinction map of the

small moderately dense cloud LDN 1780. For an angular

resolution of 4´ the visual extinction maximum is AV = 4.4

mag. ISOPHOT data and a new release of IRAS data have

been used to separate the emission from the warm and

cold components of large dust grains. It has been shown

that these components are spatially separated, with the

cold component surrounded by the warm component. The

22

cold component is well correlated with the 13CO (J=1-0) line

integrated W13 that trace molecular gas at densities of 103

cm-3. The warm component has a uniform colour temperature

of around 25±1K (assuming the dust emissivity index ß=2),

and the colour temperature of the cold component slightly

varies between ~15.8-17.3K (ß=2, ΔT=0.5K). The ratio

between the emission at 200 µm of the cold component and

AV is IV(200)/AV=12.1±0.7 MJy sr-1 mag-1. The Hα emission

(IV(Hα) and AV correlate very well; a ratio IV(Hα)/AV = 2.2±0.1

Rayleigh mag-1 is observed. The Hα emission of the diffuse

local background of LDN 1780 of ~1.4 Rayleigh is likely due

to the ionisation from OB stars of the Galactic midplane and

the Scorpius-Centaurus OB association. In the cloud itself,

the very good correlation between the Hα emission and the

extinction for a relatively large range of column densities is

likely due to the presence of a source of ionisation that can

penetrate very deep into the cloud. It is suggested that the

Hα emission is a result of ionisation of cosmic ray particles

and extended red emission due to silicon nanoparticles.

2.1.28 HESS

L. Drury

The HESS (High Energy Stereoscopic System) collaboration

of which DIAS is a member continued a very successful

year of observations and published some 16 major refereed

publications (including two in the journal Science). Of

particular significance was the detection of another spatially

resolved shell-type SNR, RXJ0852.0-4622 (the so-called Vela

Junior) in addition to RXJ1713-3942.

Image courtesy of the Hess Consortium

2.1.29 The Mid-Infrared Instrument (MIRI) for the James

Webb Space Telescope

T.P. Ray and E. Flood

MIRI, the Mid-Infrared Instrument for the James Webb Space

Telescope (JWST), will provide imaging and spectroscopy

at wavelengths from 5 to 27 microns. It is an international

collaboration between the European Space Agency and

NASA. DIAS is part of an international consortium of

European partners building the optics modules. NASA/JPL will

supply the cryostat to cool the optics as well as the detectors.

Completing the MIRI Structural Model at the Rutherford Appleton Laboratory. Image courtesy of the MIRI Team.

Production of the imager filters and the dichroics for the

spectrograph are progressing well under a DIAS contract

with the Infrared Multilayer Laboratory at the University of

Reading. The various filters are produced in batch mode

that includes not only specimens for the Demonstration and

Virtual Models (DM and VM respectively) but also the Flight

Model (FM). Radiation testing has been performed by ESA

on all filter materials to check for out-gassing and radiation

damage.

Some oxidising of two filters for the imager and coronagraph

was noted. In both cases germanium had been used to

strengthen the multilayer. As the oxidising resulted in a loss

of transmission, experiments are ongoing to seal the filters

in parylene. If successful these filters will be remanufactured.

Structural testing of MIRI at the Rutherford Appleton

Laboratory went well (see figure).


23


2.1.30 Dublin Numerical Simulations Group

A. Lim

A. Lim has undertaken to create and manage a Dublin-wide

“club” of those researchers involved in numerical simulations

in astrophysics (some interest has also come from the

Geophysics Section). This group includes workers from DIAS,

TCD and DCU and will meet at DIAS roughly once a fortnight

to discuss current research, work on common or individual

problems, and coordinate research efforts. Initial consultations

have also raised the possibility of producing a code library of

well-tested algorithms (e.g. for atomic/molecular cooling, or

the solution of Riemann problems) for general use. The first

meetings are expected early in the new year.

2.1.31 CosmoGrid and ICHEC

L. Drury and T. Lery

DIAS and CosmoGrid are founding members of the

consortium which established the Irish Centre for High End

Computing with two seats on the interim board of the centre.

During the year CosmoGrid, with the agreement of the HEA,

agreed to contribute e700,000 towards the initial equipment

purchase of ICHEC in return for access to 40% of ICHEC’s

facilities and part ownership of the “Walton” cluster.

2.1.32 Understanding Jets through Simulation,

Experiment and Theory (JETSET)

T.P. Ray, T. Lery, F. de Colle, E. Whelan and E. Flood

The JETSET Team assembled in Villard de Lans, France

JETSET is a four-year Marie Curie Research Training Network

(RTN) designed to build an interdisciplinary European research

and training community centred on the study of jets, with

a focus on outflows produced during stellar birth. The

network brings together workers in the fields of astrophysical

observations, theoretical and computational modelling,

laboratory experiments, and Grid technology. JETSET is

coordinated by DIAS and its creation has led to twenty new

postdoctoral (Experienced Researcher) and postgraduate (Early

Stage Researcher) positions in the ten partner institutions.

Commencement of the project began in February 2005 with

a two-day kick-off meeting held in Rome Observatory. By the

end of the year virtually all of the Experienced and Early Stage

Researcher posts were filled.

3. Hamilton Bicentenary Special significance attached to the annual Hamilton walk

from Dunsink Observatory to Broome Bridge because

2005, the bicentenary of his birth, was declared by the Irish

Government to be “Hamilton Year celebrating Irish Science”.

To mark the occasion an Irish oak tree was planted in the

grounds of Dunsink by Hamilton’s closest known living

descendent, Michael Rowan Hamilton John O’Regan and the

Nobel prize winning physicist, Stephen Weinberg.

4. TravelD . Coffey ASGI Conference & IDL Workshop, Galway,

18-22 April;

C . Combet Collaboration with D. Maurin and E. Vangioni-

Flam at the Institut d’Astrophysique de Paris, 09-14 February;

Institute for Pure and Applied Mathematics Meeting

“Astrophysical Fluid Dynamics, Los Angeles, 04-09 April;

Protostars and Planets V Conference, Hawaii, 21 October –

04 November;

R . Curran Observing trip, Hawaii, 11-22 April; Protostars &

Planets Conference, Hawaii, 21 October – 02 November;

C . del Burgo IAU Symposium 230, Dublin Castle, 15-19

August; Workshop on Sky polarisation at far-infrared to radio

wavelengths, Paris, 12-15 September; ASTRO-F Observation

Planning Workshop for European Open Time Users, ESAC,

24

Villafranca, Spain, 23 September; ASGI Autumn Meeting,

DCU, Dublin, 7 October; Giving a seminar at Astrophysics

Institute, Liverpool John Moores University, Liverpool, UK, 12

October; Giving a seminar at NUI Maynooth, Maynooth, 21

October; Attending a progress meeting, Groningen University,

Groningen, the Netherlands, 7-9 December;

L . Drury Last SSAC Meeting Paris, 20-21 January; HESS

Working Group Meeting Heidelberg, 9-12 February; Workshop

on SNRs – Invited Talk, Berlin, 7-9 April; Seminar in Oxford

Astrophysics Department, 24-25 May; Conference Torun,

Poland, 18-24 June; 29th ICRC Conference, Pune, 1-24 August;

Colloquium in Albert Einstein Potsdam, 22-29 September;

Representing Ireland at 28th ICSU General Assembly Shanghai,

17-22 October;

S . Dudzinski Sysadmin Conference (Fosden 2005), Brussels,

25-27 February;

E . Flood JETSET kick-off meeting, Rome, 20-22 February;

D . Froebrich Giving a talk at ASGI Cosmo Grid meeting,

Galway, 20-23 April; Work with J. Eislöffel in Tautenburg,

Germany, 4-17 May; Collaboration with M.D. Smith, Armagh,

27 June; Observtion at UKIRT (5 nights) and work with

C. Davis (JAC), K.W. Hodlapp (IPA) 5 days, Hilo, Hawaii, 8-27

August; Participation at Protostars & Planets V Conference in

Hawaii and work and gave seminar in Toronto with A. Scholz;

T . Lery Cosmogrid Conference and Courses, Galway,

Ireland, 18-21 Jan., JETSET kick-off meeting, Rome, 20-23

February; Cosmogrid/ICHEC visit to IBM research Labs in

Watson, US, 6-8 March; Invited talk at the French Institute

for Laser and Plasma (ILP) Conference, Autrans, France,

15-17 March; Cosmogrid Project scientist visit to Galway, 7

April; Organisation of IDL courses and Cosmogrid-ASGI joint

conference in Galway, 19-22 April; DEISA Kick-off meeting,

Paris, France, 9-10 May; Invited talk at a conference entitled

“Grids and the Virtual Observatory”, Strasbourg Observatory,

France, 7-8 June; International HPC Conference, Heidelberg,

Gremany, 21-24 June; IBM worldwide EMEA conference,

14-15 Sept.; HPC project presentation, DCU, 20 Sept.; HPC

project presentation, UCC and Tyndall Institute, 26 Sept.; HPC

project presentation, UCD, 28 Sept.; BlueGene Consortium

Meeting, Edinburgh, UK, 4-6 October; HPC project

presentation, DIT and RCSI, 10 Oct.; Attending and presenting

work at Protostars & Planets V Conference, Kona, Hawaii,

24-28 October; Cosmogrid/ICHEC visit to IBM research Labs,

Watson, US, 21-27 November; EU research Infrastructure

Conference, Nottingham 6-7 December;

E .J .A . Meurs Meeting Astronomy Working Group ESA, Paris,

France, 12-13 January; Giving a seminar at DCU, Dublin,

7 April; 39th ESLAB Symposium, Noordwijk, the Netherlands,

18-23 April; Collaboration with Rome Astronomical

Observatory, Rome, 3-18 May; Giving a seminar at University

of Kent, Canterbury, UK, 5 July; Talk at IAU Symposium

230, Dublin Castle, 15-19 August; Talk at conference A Life

With Stars, Retirement Conference E.P.J. van den Heuvel,

Amsterdam, the Netherlands, 22-26 August; Talk at ASGI

Autumn Meeting, DCU, Dublin, 7 October; Attending seminar

on ESA and Industry, Enterprise Ireland, Dublin, 9 December;

G . Murphy RAS Meeting on Computational Astrophysics,

London, 11 February; Talk at ASGI Meeting on YSO Jet

Propagation, Galway, 20-23 April; Institute for Pure and

Applied Mathematics Meeting “Astrophysical Fluid Dynamics,

Los Angeles, 04-09 April; Scientific collaboration within the

context of HPC Europa, Bologna, 16 August – 22 September;

Protostars & PlanetsV Conference, Hawaii, 21-29 October;

C . O’Maoileidigh Cosmogrid IDL course, Galway, 21-22

April; MODEST 5-c N-body simulations Summer School,

Amsterdam, the Netherlands, 24-30 July; IAU Symposium

230, Dublin Castle, 15-19 August; A Life With Stars,

Retirement Conference E.P.J. van den Heuvel, Amsterdam, the

Netherlands, 22-26 August;

T . Ray Optical Spectroscopy Meeting – RAS London, 14-

16 January; Visit to JETSET partner at Imperial College and

attending JETSET Kick-Off Meeting in Rome University,

Rome, 18-23 February; Giving a seminar in the University of

Sussex; 4 March; Attending and presenting work at Protostars

& Planets V Conference, Kona, Hawaii, 19-31 October;

Attended meeting on ESA and Industry, Enterprise Ireland.

S . Vergani EU Research Training Network School on

GRBs: the first three hours, Santorini, Greece, 29 August-

2 September; Brera Observatory, Milan-Merate, Italy,

5-9 December;


25


P . Ward ASGI Spring Meeting, Galway, 21-22 April; Alpbach

Summer School on Dark Energy and Dark Matter in the

Universe, Alpbach, Austria, 19-28 July; IAU Symposium 230,

Dublin Castle, 15-19 August; EU Research Training Network

School on GRBs: the first three hours, Santorini, Greece,

29 August-2 September;

E . Whelan Visit to Osservatorio Astrofisico di Arcetri for

collaboration work and seminar, Florence, 21 May – 02 June;

Collaborative work with Paulo Garcia, JETSET node, 8-13

November.

5. Publications

5 .� Publications (Refereed Journals)

Aharonian, F., … Drury, L. O’C., …: H.E.S.S. observations of

PKS 2155-304, Astronomy and Astrophysics, 430, 865-875

Aharonian, F., … Drury, L. O’C., …: Search for TeV emission

from the region around PSR B1706-44 with the HESS

experiment, Astronomy and Astrophysics, 432, L9-L12

Aharonian, F., … Drury, L. O’C., …: Very high energy gamma

rays from the composite SNR G 0.9+0.1 \it Astronomy and

Astrophysics, 432, L25-L29

Aharonian, F., … Drury, L. O’C., …: A New Population of Very

High Energy Gamma-Ray Sources in the Milky Way, Science,

307, 1938-1942

Aharonian, F., … Drury, L.~O’C., …: Discovery of extended

VHE gamma-ray emission from the asymmetric pulsar

wind nebula in MSH 15-52 with HESS, Astronomy and

Astrophysics, 435, L17-L20

Aharonian, F., … Drury, L. O’C., …: Discovery of VHE gamma

rays from PKS 2005-489, Astronomy and Astrophysics, 436,

L17-L20

Aharonian, F., … Drury, L. O’C., …: Observations of Mkn 421

in 2004 with HESS at large zenith angles, Astronomy and

Astrophysics, 437, 95-99

Aharonian, F., … Drury, L. O’C., …: Upper limits to the

SN1006 multi-TeV gamma-ray flux from HESS observations,

Astronomy and Astrophysics, 437, 135-139

Aharonian, F., … Drury, L. O’C., …: Detection of TeV γ-ray

emission from the shell-type supernova remnant RX J0852.0-

4622 with HESS, Astronomy and Astrophysics, 437, L7-L10

Aharonian, F., … Drury, L. O’C., …: Discovery of Very High

Energy Gamma Rays Associated with an X-ray Binary, Science,

309, 746-749

Aharonian, F., … Drury, L. O’C., …: Serendipitous discovery of

the unidentified extended TeV γ-ray source HESS J1303-631,


Aharonian, F., … Drury, L. O’C., …: Observations of selected

AGN with HESS, Astronomy and Astrophysics, 44�, 465-472

Aharonian, F., … Drury, L. O’C., …: Discovery of the binary

pulsar PSR B1259-63 in very-high-energy gamma rays around

periastron with HESS, Astronomy and Astrophysics, 442, 1-10

Aharonian, F., … Drury, L. O’C., …: A search for very high

energy γ-ray emission from the starburst galaxy NGC 253 with

HESS, Astronomy and Astrophysics, 442, 177-183

Aharonian, F., … Drury, L. O’C., …: Multi-wavelength

observations of PKS 2155-304 with HESS, Astronomy and


Aharonian, F., … Drury, L. O’C., …: A possible association of

the new VHE γ-ray source HESS J1825 137 with the pulsar

wind nebula G 18.0 0.7, Astronomy and Astrophysics, 442,

L25-L29

Combet, C., Maurin, D., Donnelly, J., Drury, L. O’C., and

Vangioni-Flam, E.: Spallation-dominated propagation of

heavy cosmic rays and the Local Interstellar Medium (LISM),


Del Burgo, C. and Laureijs, R.~J.: New insights into the dust

properties of the Taurus molecular cloud TMC-2 and its

surroundings, Monthly Notices of the Royal Astronomical

Society, 360, 901-914

Dolcini, A., … and Meurs, E.: Multiband photometry of the

blazar PKS 0537-441: a major active state in December 2004-

March 2005, Astronomy and Astrophysics, 443, L33-L36

Fiore, F., …, Meurs, E.J.A., Ward, P., …: A Flash in the Dark:

UVES Very Large Telescope High-Resolution Spectroscopy of

Gamma-Ray Burst Afterglows.

26

Froebrich, D., Scholz, A., Eislöffel, J., and Murphy, G.C.:

Star formation in globules in IC 1396, Astronomy and


Froebrich, D., Ray, T.P., Murphy, G.C., and Scholz, A.:

A Galactic Plane relative extinction map from 2MASS,

Astronomy and Astrophysics, 432, L67-L70

Gras-Velázquez, Á and Ray, T.~P.: Weak-line T Tauri stars:

circumstellar disks and companions. I. Spectral energy

distributions and infrared excesses, Astronomy and


Lebedev, S.V., …, Lery, T.: Magnetic tower outflows from

a radial wire array Z-pinch, Monthly Notices of the Royal

Astronomical Society, 36�, 97-108

Lery, Thibaut, Combet, Céline, Murphy, Gareth, and Drury,

Luke O. C.: Virtual MHD Jets on Grids, Astrophysics and

Space Science, 298, 375-378

Lim, A.J., Falle, S.A.E.G., and Hartquist, T.W.: The effect

of dissipation on the generation of density structure by

magnetohydrodynamic waves, Monthly Notices of the Royal

Astronomical Society, 357, 461-470

Lim, A.J., Falle, S.A.E.G., and Hartquist, T.W.: The Production

of Magnetically Dominated Star-forming Regions,

Astrophysical Journal, 632, L91-L94

Maoiléidigh, Cóilín O’., Meurs, Evert J.A., and Norci, Laura:

On the feasibility of detection of neutron star companions

to OB runaways using Gaia astrometry, New Astronomy, �0,

591-601

Meurs, E.J.A., Fennell, G., and Norci, L.: X-Ray Counterparts

of Runaway Stars, Astrophysical Journal, 624, 307-316

Meurs, E.J.A. and Rebelo, M.C.A.: SN contributions to GRB

lightcurves, Nuovo Cimento C Geophysics Space Physics C,

28, 621

Nisini, B., Bacciotti, F., Giannini, T., Massi, F., Eislöffel,

J., Podio, L., and Ray, T.P.: A combined optical/infrared

spectral diagnostic analysis of the HH1 jet, Astronomy and

Astrophysics, 44�, 159-170

Raga, A.C., Williams, D.A., and Lim, A.J.: The Formation of H2

in Variable Herbig-Haro Jets, Revista Mexicana de Astronomia

y Astrofisica, 4�, 137-146

Ward, P., Meurs, E.J.A., et al.: A flash in the dark: UVES/VLT

high-resolution spectroscopy of GRB afterglows, Nuovo

Cimento C Geophysics Space Physics C, 28, 783

Whelan, Emma T., Ray, Thomas P., Bacciotti, Francesca, Natta,

Antonella, Testi, Leonardo, and Randich, Sofia: A resolved

outflow of matter from a brown dwarf, Nature, 435, 652-654

Woitas, J., Bacciotti, F., Ray, T.P., Marconi, A., Coffey, D.,

and Eislöffel, J.: Jet rotation: Launching region, angular

momentum balance and magnetic properties in the bipolar

outflow from RW Aur, Astronomy and Astrophysics, 432,

149-160

5 .2 Publications (Non-Refereed Journals)

Bacciotti, F., Ray, T.P., Eislöffel, J., Woitas, J., and Coffey, D.:

The accretion/ejection paradigm of low mass stars tested with

HST, Memorie della Societa Astronomica Italiana, 76, 366

Chrysostomou, A., Bacciotti, F., Nisini, B., Ray, T.P., Eislöffel,

J., Davis, C.J., and Takami, M.: The Transport of Angular

Momentum from YSO Jets, Protostars and Planets V, 8156

Coffey, D.A., Bacciotti, F., Woitas, J., Ray, T.P., and Eislöffel,

J.: T Tauri Jet Rotation Revealed by Optical and NUV HST/STIS

Spectra, Protostars and Planets V, 8032

Combet, C. and Lery, T.: Transit Flow Models for Low and

High Mass Young Stellar Objects, Protostars and Planets V,

8175

Covino, S., … Meurs, E., …: GRB 050412: IR and optical

observations, GRB Coordinates Network, 3236, 1

Covino, S., … E., Meurs, E., ..: PKS 0537-441: optical

monitoring, The Astronomer’s Telegram, 564, 1

Curran, R., Chrysostomou, A., Collett, J., Aitken, D., and

Jenness, T.: First SCUBA Polarimetry of Two Candidate High-

Mass Protostellar Objects, Astronomical Society of the Pacific

Conference Series, 343, 185


27


Curran, R.L., Collett, J.L., Atkinson, J.W., Chrysostomou, A.,

and Aitken, D.K.: Magnetic Fields in Star Forming Regions:

DR21(OH), Protostars and Planets V, 8160

D’Avanzo, P., … Meurs, E., …: GRB050509: REM NIR and

optical observations, GRB Coordinates Network, 3400, 1

Davis, C.J., Nisini, B., Takami, M., Pyo, T.S., Smith, M.D.,

Whelan, E., Ray, T.P., and Chrysostomou, A.: Adaptive-Optics

Assisted Near-IR Spectroscopy of SVS 13 and Its Jet, Protostars

and Planets V, 8065

Distefano, E., … Meurs, E., ...: GRB051105B: REM optical

observation, GRB Coordinates Network, 4223, 1

Drury, Luke, O’C: Cosmic Ray Acceleration in Supernova

Remnants, AIP Conf. Proc. 80�: Astrophysical Sources of High

Energy Particles and Radiation, 337-344

Froebrich, D. and del Burgo, C.: Accuracy in the

Determination of the NIR Extinction Power Law Index,

Protostars and Planets V, 8040

Lery, T.: First Results of JETSET, a New European Research and

Training Network Dedicated to Jets, Protostars and Planets V,

8070

Lery, Thibaut, Combet, Celine, and Murphy, Gareth: Star

Formation Histories, AIP Conf. Proc. 784: Magnetic Fields

in the Universe: From Laboratory and Stars to Primordial

Structures, 140-144

Leygnac, S., O’Sullivan, S., and Lery, T.: Radiation in YSO Jets

and Shocks, Protostars and Planets V, 8394

Murphy, G.C., Lery, T., O’Sullivan, S., and Spicer, D.S.:

Interacting Multiple Jets from Binary Sources, Protostars and

Planets V, 8174

Nisini, B., Bacciotti, F., Podio, L., Giannini, T., Massi, F.,

Eislöffel, J., and Ray, T.P.: A Combined Optical/Infrared

Spectral Diagnostic Analysis Applied to Jets from Young Stars,

Protostars and Planets V, 8041

Norci, L. and Meurs, E.J.A.: On the X-ray contribution from

young supernovae in starbursts, ASSL, 329: Starbursts: From

30 Doradus to Lyman Break Galaxies, 54P

Piranomonte, S., … Meurs, E., ..: GRB050416B: IR

observations, GRB Coordinates Network, 328�, 1

Piranomonte, S., … Meurs, E., ...: XRF 050509C: REM NIR and

optical refined analysis, GRB Coordinates Network, 3427, 1

Podio, L., Bacciotti, F., Nisini, B., Giannini, T., Massi, F.,

Eislöffel, J., and Ray, T.P.: Potential of a combined optical/

NIR diagnostics for protostellar jets, Memorie della Societa

Astronomica Italiana, 76, 396

Ray, T.P.: Outflows from low mass young stars and brown

dwarfs, Memorie della Societa Astronomica Italiana, 76, 362

Rea, N., … Meurs, E., ...: Optical and IR observations of SAX

J1808.4-3658 in outburst, The Astronomer’s Telegram, 5�5, 1

Takami, M., … Ray, T.P., ..: Subaru IR Echelle Spectroscopy of

Herbig-Haro Driving Sources, Protostars and Planets V, 8207

Testa, V., … Meurs, E., ...: GRB050607: prompt REM

observations, GRB Coordinates Network, 3523, 1

Testa, V., … Meurs, E., ....: GRB050607: refined analysis of

prompt REM observations, GRB Coordinates Network, 3538, 1

Stehlé, C., Ciardi, B., Lebedev, S.V., and Lery, T.: Laboratory

Models for Astrophysical Jets, SF2A-2005: Semaine de

l’Astrophysique Francaise, 355

Whelan, E.T., Ray, T.P., Bacciotti, F., Natta, A., Testi, L., and

Randich, S.: Spectro-Astrometry as a Probe of Outflow Activity

in Brown Dwarfs, Protostars and Planets V, 8073.

28

School of Cosmic Physics – Geophysics

1. GeneralDuring 2005 the Section continued the growth of the

previous two years with the addition of an IT technician,

a fellow and a student, and the pending addition of the

Professor of Seismology. John Allman joined the Section

as an IT technician in early-January. Together with Stephan

Dudzinski, they are modifying the network to assure

firewall hardness against attack. Allman is also introducing

management tools to handle the growing number of

Windows-based PCs. Jones’ SAMTEX extension was funded

by Science Foundation Ireland. This grant is funding a Fellow,

Dr. Mark Muller of South Africa, for two years, and a Scholar,

Ms. Marion Miensopust of Germany, for three years.

The Professorship in Seismology was advertised widely, and

interviews for the position were held on 15-16 November, 2005.

2. General Geophysics Activities

2 .� EuroArray

EuroArray continued to build interest during 2005 with

workshops, presentations, and collaborative meetings. It was

decided to integrate EuroArray with Topo-Europe, and push

the two together at the European stage. A Topo-Europe

EUROCORES proposal in the recent call was the top-rated of

all 17 Life and Earth Science (LESC) proposals to the ESF, but

was not funded. Indications are that a re-submission in 2006

with some areas addressed will be well received.

Workshops/Meetings:

nEuroArray workshop, Budapest, Hungary, 15-16 March

nTopo-Europe workshop, Budapest, Hungary, 17-18 March

nEuroArray Town Hall meeting, EGU2, Vienna, Austria,

26 April

nPICASSO workshop, Granada, Spain, 25-26 June

nTopo-Europe workshop, Heidelberg, Germany, 27-29

October

Presentations:

nJones, A.G., Probing the mantle with MT. Invited paper at:

EuroArray Workshop, Budapest, Hungary, 15-16 March.

nJones, A.G., P. Maguire, and H. Thybo, EuroArray:

Comprehensive high-resolution survey of the European

mantle. EGU2, Vienna, 25-29 April.

nThybo, H., A.G. Jones and P. Maguire, EuroArray:

4D Europe, The assembly of a continent. Invited paper

at: PICASSO Workshop, Granada, Spain, 25-26 June.

nJones, A.G., P. Maguire, and H. Thybo, EuroArray:

Scientific objectives and technical aspects. Invited paper

at: PICASSO Workshop, Granada, Spain, 25-26 June.

Proposal submissions:

nPre-proposal submitted by Jones to SFI RFP2006 competition

to fund MT work in PICASSO together with U. Barcelona

colleagues.

2 .2 AfricaArray

AfricaArray is growing in strength and interest. Funding

of almost US$2M was secured by Prof. Andy Nyblade to

train Afro-American students in South Africa and to fund

African students attending courses at Penn State. It is hoped

that DIAS will participate in AfricaArray not only with the

educational aspects but also by providing seismological

expertise in the form of sponsoring and maintaining seismic

stations in Botswana.

Workshops/Meetings:

nAfricaArray workshop, Palmanova, Italy, 26-27 February.

29


3. Electromagnetic Activities

3 .� SAMTEX (Southern African Magnetotelluric Experiment)

AG Jones, X Garcia, M Muller, M Hamilton, M Miensopust,

with Geophysics staff and colleagues from Woods Hole

Oceanographic Institution (U.S.A.), the Council for

Geosciences (South Africa), DeBeers (South Africa) and the

University of Witwatersrand (South Africa)

The SAMTEX project continued through 2005 at the same

furious pace as the previous year. With Rio Tinto becoming a

project sponsor, this enabled a third phase of data acquisition to

take place. Further MT data were acquired, both in the Jan-April

time-frame, as part of Phase II, and in the Sept-Nov timeframe,

as part of Phase III. Most sites were located in Botswana.


nProposal submitted by Jones to SFI RFT2005 competition

to fund Phase III of SAMTEX. Proposal funded at a level of

e172,000 for 3 years.

Workshop:

nSAMTEX Data Modelling Workshop, Dublin, 2-13 May

Paper submitted:

nHamilton, M., A.G. Jones, R.L. Evans, S. Evans, S. Fourie,

X. Garcia, A. Mountford, J.E. Spratt, and the SAMTEX

Team, Anisotropy structure of the lithosphere derived from

magnetotelluric and seismic shear-wave splitting analyses

in southern Africa, submitted to Physics of the Earth and

Planetary Interiors, 8 August, 2005. Accepted pending

moderate revision.

Presentations:

nJones, A.G., R.L. Evans, S. Fourie, S. Evans, A. Mountford,

X. Garcia, J. Spratt, A.D. Chave, and the SAMTEX Team,

Comparison of the electromagnetic structure of Archean

cratons: Project SAMTEX. South African Geophysical

Association (SAGA) meeting, Cape Town, South Africa,

14–16 September.

nHamilton, M., A.G. Jones, R.L. Evans, X. Garcia, C.J.S.

Fourie, S.F. Evans, S.J. Webb, and the SAMTEX MT Team,

Electrical anisotropy across southern Africa from MT

studies. South African Geophysical Association (SAGA)

meeting, Cape Town, South Africa, 14–16 September.

nCole, J., P. Cole, A.G. Jones, R.L. Evans, X. Garcia, C.J.S.

Fourie, C. Smith, A. Mountford, S.J. Webb, and the

SAMTEX MT team, Application of wavelet transform de-

noising techniques to geophysical data. South African

Geophysical Association (SAGA) meeting, Cape Town,

South Africa, 14–16 September.

nMuller, M.R., S.J. Webb, A.G. Jones, W.H.B. Steenkamp,

P. Kowalczyk, R.L. Evans, C.J.S. Fourie, C. Smith, A.

Mountford, and the SAMTEX team, Deep-crustal electrical

imaging beneath the Vredefort impact structure, South

Africa, using broadband magnetotellurics. South African

Geophysical Association (SAGA) meeting, Cape Town,

South Africa, 14–16 September.

nJones, A.G., R.L. Evans, X. Garcia, M.P. Hamilton, S. Evans,

S. Fourie, A. Mountford, J. Spratt, A. Chave and the

SAMTEX Team, A magnetotelluric survey of the Kaapvaal

Craton and its surroundings: The SAMTEX experiment.

Fall AGU, San Francisco, USA, 12-16 December.

nGarcia, X., A.G. Jones, R.L. Evans, S. Evans, S. Fourie,

A. Mountford, and the SAMTEX Team, The electrical

lithosphere of the Archean: Insights from the Kaapvaal

craton and elsewhere. Fall AGU, San Francisco, USA,

12-16 December.

3 .2 ISLE-MT

CK Rao, M Moorkamp, AG Jones

The data acquired in 2004 were contaminated by the

electric fences that were operational on farm land. The

uncontaminated part of the data were processed and analyzed

using conventional methods. The data was then subjected

to the Groom Bailey decomposition technique (McNeice and

Jones, 2001) for removal of distortion effects and to find

the correct geoelectric strike direction. The results from 2-

D inversion of the corrected responses of the eastern-most

profile indicate a NW-dipping conductor at depth of 8-10 km.

30


The dipping conductor is indicative of a collision zone and

coincides with the position of Iapetus suture zone. Based on

2-D inversion models depth sections are created. The sections

show strong variations in resistivity as from east to west. The

results indicated the need for further data acquisition on the

eastern-most profile to extend towards the north and acquire

data in between the stations occupied in 2004.

In summer 2005, new data were collected at 14 additional

stations using 10 long period instruments (loaned from GFZ

Potsdam) and 5 broad band instruments from DIAS. With the

experience of cow fences on farm land from last year’s data

acquisition, this year Coillte forest lands which are relatively

free from electric fences were selected. This resulted in high

quality data over a wide frequency band for the first time in

Ireland. Processing of the newly acquired data was completed.

The second component of the work is to investigate methods

for removal of noise from the data and joint inversion of

MT and teleseismic data. We examined the possibilities

of adaptive filtering methods. These showed promising

first results in reducing the influence of the cow-fences.

Developing the joint inversion algorithm for receiver-function

and magnetotelluric data is being taken up at present.

First experiments with synthetic data were successful when

seismic velocities and electrical conductivity change at the

same depth. Further experiments with synthetic data will be

conducted to evaluate how the algorithms behave when the

correlation is not perfect or completely absent and how these

algorithms can be used for hypothesis testing.

Presentations:

nMoorkamp, M., C.K. Rao, and A.G. Jones, Noise reduction in

magnetotelluric recordings using adaptive filters. Institute of

Physics in Ireland meeting, Newbridge, Ireland, 18-20 March.

nMoorkamp, M., C.K. Rao, and A.G. Jones, Noise

cancellation in magnetotelluric time series using adaptive

methods. EGU2, Vienna, 25-29 April.

nMoorkamp, M., C.K. Rao, and A.G. Jones, Joint inversion

of magnetotelluric and receiver function data using a

genetic algorithm. BGA PGM, Galway, 31 August –

2 September.

nMoorkamp, M., C.K. Rao, and A.G. Jones, Joint inversion

of magnetotelluric and receiver function data. EMTF

Workshop.

3 .3 3D MT Modelling/Inversion

D Avdeev and A Avdeeva

An efficient solution of the 3-D MT large-scale inverse

problem was the subject of our research in 2005. The solution

is based on a limited-memory quasi-Newton optimization

algorithm with simple bounds. The central problem of the

inversion is to calculate the derivatives of the penalty function.

We developed and implemented explicit expressions for these

derivatives. The first preliminary results of QN inversion were

obtained using a synthetic dataset.

Papers accepted:

nAvdeev, D.B., Three-dimensional electromagnetic

modelling and inversion from theory to application,

Surveys in Geophysics, 26, 767-799, 2005.

nAvdeev, D.B., Forward modelling of EM, Invited article

in Encyclopedia of Geomagnetism and Paleomagnetism,

Eds. D. Gubbins and E. Herrero-Bervera, Springer, The

Netherlands, 2005.

nAvdeev, D.B., Fast integral equation method for

geoelectric forward problems, In Electromagnetic studies

of the Earth interior, Scientific world, Moscow, pp.11-32,

2005 (in Russian).

Papers submitted:

nAvdeeva, A.D., and Avdeev, D.B., A limited memory

quasi-Newton inversion for 1-D magnetotellurics,

Geophysics, in review.

Presentations:

nAvdeev, D.B., Three-dimensional electromagnetic

inversion: State-of-the-art, Cosmogrid Conference,

19 January, UCD, Dublin, Ireland.

nAvdeeva, A.D., Implementation of a quasi-Newton

method for 1-D magnetotelluric inversion, 48th IGRM

conference, 18-20 February, TCD, Dublin.

3�


nAvdeev, D.B., Basics of EM inversion, SAMTEX Workshop,

16 May, DIAS, Dublin, Ireland.

nAvdeeva, A.D., A quasi-Newton inversion for 1-D

magnetotellurics, BGA conference, 1-2 September,

Galway, Ireland.

3 .4 Slave to Bear MT Project

JE Spratt and AG Jones, with colleagues from the C.S. Lord

Geoscience Centre (Yellowknife, Canada)

Unfortunately, due to NWT Government budget cutbacks

for geoscience funding to the C.S. Lord Geoscience Centre

the planned second phase of MT data acquisition on the

Slave2Bear project did not take place. Data from the 2004

acquisition were reprocessed, re-analysed and modelled.

In preparation:

nSpratt, J.E. and A.G. Jones, A magnetotelluric transect

from the Slave Craton to the Bear Province across the

Wopmay Orogen. For submission to Canadian Journal of

Earth Sciences.

3 .5 Inkaba yeAfrica

U Weckmann, with colleagues from the GeoForschungsZentrum

Potsdam (Germany), and the University of Cape Town (South

Africa)

The MT data collected along the first part of the Agulhas-

Karoo transect were reprocessed, interpreted and modelled.

The obtained 2-D inversion model includes structures which

were previously unknown. We were able to correlate a

shallow sub-horizontal conductive band with the blackshales

of the Whitehill Formation. Therefore we used lithological

information of deep boreholes in the vicinity of our profile. The

mid-crustal conductivities in the profile are much more difficult

to interpret as direct observations are missing. Together with

T. Branch from UCT we integrated magnetic and MT results

to test whether a common source for both geophysical

anomalies, the Beattie Magnetic Anomaly and the Southern

Cape Conductive Belt, is justified. It seems that in order to

explain the magnetic anomaly a large body of a magnetic rock

is necessary whereas the MT model includes a comparably

smaller feature, more compatible with a shear zone.

In November and December 2005 MT data were collected at

80 sites along the on-shore/offshore Agulhas-Karoo transect.

Additionally, measurements (40 sites) along a 75km long

profile further to the East were conducted to complement the

seismic WRR data. This data set has still to be processed and

analyzed.

Publications:

nWeckmann, U., O. Ritter, A. Jung, T. Branch and

M. de Wit, Magnetotelluric measurements across the

Beattie magnetic anomaly and the Southern Cape

Conductive Belt, South Africa, submitted to Journal of

Geophysical Research.

Presentations:

nWeckmann, U., O. Ritter, M. de Wit, A. Jung, T. Branch:

Magnetotelluric Measure-ments across the Magnetic

Beattie Anomaly and the Southern Cape Conductive Belt

in South Africa, Poster at EGU General Assembly, Vienna,

Austria, 24-29 April.

nWeckmann, U., O. Ritter, A. Jung, J. Hübert, U. Kniess,

T. Branch, T. Mabidi, J. Stankiewicz, M. de Wit and

R. Green, New Magnetotelluric Measurements Across

The Beattie Magnetic Anomaly And The Southern Cape

Conductive Belt, Inkaba yeAfrica workshop, Cape Town,

29 May - 1 June.

nRitter, O., H. Frimmel, T. Branch, R. Green, A. Jung,

M. Rohwer, T. Ryberg, A. Schulze, J. Viljoen, M. Weber,

U. Weckmann, and M. de Wit, Agulhas-Karoo Geoscience

Transect: Status And First Results of the Geophysical and

Geological Onshore Transect, Inkaba yeAfrica workshop,

Cape Town, 29 May - 1 June.

nWeckmann, U., O. Ritter, T. Branch, A. Jung and

M. de Wit. MT measurements across the Beattie magnetic

anomaly and the Southern Cape Conductive Belt, South

Africa. 21. EMTF-Kolloquium, Holle, Germany.

32

3 .6 Marine EM

X Garcia, AG Jones

Given that 9/10th of Irish national landmass lies beneath the

Atlantic Ocean, and that that area represents an untapped

and virtually unknown resource, Garcia and Jones are

attempting to establish a marine EM component at DIAS

using Garcia’s experience from WHOI and connections with

WHOI scientists.


nPre-proposal submitted by Garcia to SFI RFP2006

competition for Bottom Ocean MT exploration of the

Porcupine Basin.

nPre-proposal submitted by Garcia to SFI RFP2006

competition for Study of Galway Bay to map channels

responsible for groundwater discharges.

nPre-proposal submitted by Brown (NUIG, with Garcia)

to SFI RFP2006 competition for Multidisciplinary study

of seafloor using EM, seismics, bathymetry and core

sampling.

nProposal submitted by Garcia to PIP for Multidisciplinary

study of seafloor using EM, seismics, bathymetry and core

sampling.

Presentations

nGarcia, X., A.G. Jones, R. Evans, and C. Brown.

Marine EM studies in Ireland. 48th IGRM conference,

18-20 February, TCD, Dublin.

3 .7 Other


nPre-proposal submitted by Jones to SFI RFP2006

competition to Project EMMVA – Electromagnetic

monitoring of volcanic activity.

nProposal submitted by Jones to Geological Survey of Canada

to fund down-mine electro-magnetic measurements

(together with colleagues from UB) under the auspices of

TGI-3 (Targeted Geoscience Initiative, Phase 3).

3.7.1 Cork AMT survey

L Collins, JE Spratt, AG Jones, with B Higgs (UCC)

In collaboration with B. Higgs (UCC), an AMT pilot survey was

carried out in an area near Middleton, Co. Cork in August

with the aim to locate buried glacial valleys. Phoenix MTU

recorders and Phoenix electrodes and metal rods were used.

This was the first time an AMT survey has been undertaken

in Ireland, so it was a learning experience. Unfortunately, the

location chosen for this pilot survey was very poor from a

natural-source EM perspective. It is planned to continue this

work next year in an area less affected by cultural noise. In

addition, as part of the DIAS-UB cooperation, E. Falgas from

UB will bring to Ireland a shallow-probing controlled-source

EM system (Strategem), and will undertaken comparison

surveys at the same locations.

3.7.2 Birr Castle DC resistivity survey

L Collins, JE Spratt, AG Jones, with B Higgs (UCC)

An electrical resistivity survey was carried out in August in

the grounds of Birr Castle with the aim of locating bedrock

at depths less than 20m to allow anchorage for a radio

telescope. A Campus Tigre resistivity meter and multi core

cable was used. Imagepro software was used to collect the

data, and Res2-Dinv to subsequently model the data. This

equipment and software is the property of University College

Cork, and Dr. Bettie Higgs helped us carry out the survey.

The results of the survey seem to show that the sediment/

bedrock interface occurs at around 12m-14m depth. It is

recommended that a borehole be drilled at a central point of

where the survey was carried out to check the interpretation

and to calibrate the survey data.

3.7.3 INDEPTH

AG Jones

The INDEPTH project will continue with its funded 4th phase in

2007/08. Papers from Phases II and III were published in 2005.

Publications:

nSpratt, J., A.G. Jones, K.D. Nelson, M.J. Unsworth, and

the INDEPTH MT team, 2005. Crustal structure of the

India-Asia collision zone, southern Tibet, from INDEPTH


33


MT investigations. Physics of the Earth and Planetary

Interiors, �50, 227-237.

nSolon, K., A.G. Jones, K.D. Nelson, M.J. Unsworth,

W. Wei, H. Tan, H., S. Jin, M.Deng, J.R. Booker, S. Li,

P. Bedrosian, 2005. Structure of the crust in the vicinity of

the Banggong-Nujiang suture central Tibet from INDEPTH

magnetotelluric data. Journal of Geophysical Research,

��0, B10102, doi: 10.1029/2003JB002405.

nUnsworth, M.J., A.G. Jones, W. Wei, G. Marquis,

S. Gokarn, J.E. Spratt, and the IN-DEPTH-MT team, 2005.

Crustal rheology of the Himalaya and Southern Tibet

inferred from magnetotelluric data. Nature, 438, 78-81,

doi: 10.1038/nature04154.

3.7.4 Lithoprobe

AG Jones

Jones is completing his legacy Lithoprobe activities with the

publication of a number of major papers in review volumes

and other work.

Publications:

nWhite, D.J., M.D. Thomas, A.G. Jones, J. Hope, B. Nemeth

and Z. Hajnal, 2005. Geophysical Transect across a

Paleoproterozoic Continent-Continent Collision Zone:

The Trans-Hudson Orogen. Canadian Journal of Earth

Sciences, 42, 385-402.

nGarcia, X. and A.G. Jones, 2005. Electromagnetic image

of the Trans-Hudson orogen: THOT94 transect. Canadian

Journal of Earth Sciences, 42, 479-493.

nFerguson, I.J., K.M. Stevens and A.G. Jones, 2005.

Electrical resistivity imaging of the central Trans-Hudson

Orogen in eastern Saskatchewan, Canada. Canadian

Journal of Earth Sciences, 42, 495-515.

nJones, A.G., J. Ledo and I.J. Ferguson, 2005.

Electromagnetic images of the Trans-Hudson orogen:

The North American Central Plains anomaly revealed.

Canadian Journal of Earth Sciences, 42, 457-478.

nWu, X., I.J. Ferguson and A.G. Jones, 2005. Geoelectric

structure of the Proterozoic Wopmay Orogen and adjacent

terranes, Northwest Territories, Canada. Canadian Journal

of Earth Sciences, 42, 955-981.

nJones, A.G., J. Ledo, I.J. Ferguson, C. Farquharson,

X. Garcia, N. Grant, G.W. McNeice, B. Roberts, J. Spratt,

G. Wennberg, L. Wolynec, and X. Wu, 2005. The electrical

resistivity structure of Archean to Tertiary lithosphere along

3,200 km of SNORCLE profiles, northwestern Canada.

Canadian Journal of Earth Sciences, 42, 1257-1275.

nLedo, J. and A.G. Jones, 2005. Temperature of the

upper mantle beneath the Intermontane Belt, northern

Canadian Cordillera, determined from combining mineral

composition, electrical conductivity laboratory studies and

magnetotelluric field observations. Earth and Planetary

Science Letters, 236, 258-268.

3.7.5 Other and General

Publications:

nEvans, S., A.G. Jones, J. Spratt and J. Katsube, 2005.

Central Baffin electromagnetic ex-periment (CBEX) maps

the NACP in the Canadian arctic. Physics of the Earth and

Planetary Interiors, �50, 107-122.

nGarcia, X. and A.G. Jones, 2005. A new methodology for the

acquisition and processing of audio-magnetotelluric (AMT)

data in the AMT dead-band. Geophysics, 70, 119-126.

nJones, A.G., Electromagnetic interrogation of the

anisotropic Earth: Looking into the Earth with polarized

spectacles. Submitted to Physics of the Earth and

Planetary Interiors, 6 October, 2005.

nJones, A.G. and X. Garcia, 2005. Electrical resistivity

structure of the Yellowknife River Fault Zone and

surrounding region. Gold in the Yellowknife Greenstone

Belt, Northwest Territories: Results of the EXTECH III

Multidisciplinary Research Project, publ. by Geological

Association of Canada, Mineral Deposits Division, Special

Publication, accepted, 13 May, 2004.

nMartí, A., P. Queralt, A.G. Jones and J. Ledo, 2005.

Improving Bahr’s invariant parameters using the WAL

approach. Geophysical Journal International, �63, 38-41.

34

nMaercklin, N., P. A. Bedrosian, Ch. Haberland, O. Ritter,

T. Ryberg, M. H. Weber, and U. Weckmann, 2005.

Characterizing a large shear-zone with seismic and

magnetotelluric methods the case of the Dead Sea

Transform. Geophysical Research Letters, 32, L15303,

doi:10.1029/2005GL022724.

nRitter, O., A. Hoffmann-Rothe, P. A. Bedrosian,

U. Weckmann, and V. Haak, 2005. Electrical conductivity

images of active and fossil fault zones, in: Bruhn, D.

and Burlini, L. (eds.) High-Strain Zones: Structure and

Physical Properties, Geological Society of London Special

Publications, 245, 165-186.

nWeckmann, U., A. Magunia, and O. Ritter, 2005. Effective

noise separation for magnetotelluric single site data

processing using a frequency domain selection scheme,

Geophysical Journal International, �6�, 456-468.

Presentations:

nJones, A.G., 2005. Geophysics at DIAS: overview of

activities. Irish Geological Research Meeting, Trinity

College Dublin, Dublin, 19-20 February.

nU. Weckmann. Phase split: evidence for mantle anisotropy?

21st EMTF-Kolloquium, Holle, Germany.

In preparation:

nQueralt, P., A.G. Jones, and J. Ledo, Electromagnetic

imaging of a complex ore body, three-dimensional forward

modelling, two-dimensional inversion, sensitivity tests and

down-mine measurements. For submission to Geophysics.

4. Seismological Activities

4 .� HADES

PW Readman, BM O’Reilly, C Ravaut, L Gernigon, A Chabert

with PM Shannon of UCD

On the seismic interpretation side of the HADES project

(Hatton Deep Seismic) there has been progress on refining

the tomography models for the two transverse lines running

across the Hatton Continental Margin (HCM), as well

as with the line running approximately along the axis of

the Hatton Basin. With 300 Ocean Bottom Seismometer

positions at ca 3 km intervals and shots every 120 m, this

project produced an enormous quantity of data which has

necessitated the development of a new processing and

modelling methodology. Considerable effort was also directed

at developing a method to define the lower crustal structure,

and especially the Moho. The tomography model was used to

develop a velocity model for the upper part of the crust and

sedimentary layers, which was then used in a more traditional

forward modelling approach to define the Moho and the

base of the anomalous velocity body beneath the HCM. The

geological/geophysical side of the project has progressed

well with the new models being compared and integrated

with other geophysical datasets, in particular vertical seismic

reflection and gravity/magnetic data from the Irish National

Seabed Survey data.

nFirst-arrival traveltime tomography was applied on the

three profiles of the HADES experiment.

nThe reliability of the derived tomographic models was

assessed by running checkerboard tests and convergence

analysis.

nFor Profile 1, 100 starting models were generated randomly

and inverted in order to investigate the influence of the

starting model on first-arrival traveltime tomography.

nThe position of the Moho interface was derived by a

forward modelling technique using the traveltimes of the

PmP phase (reflected phase on the moho interface).

Presentations:

nRavaut C., Parallel computational techniques applied to

inversion of wide-angle seismic datasets, west of Ireland.

COSMOGRID meeting, 19 January, Dublin.

nRavaut, C., A wide-angle seismic study of the West Hatton

margin: Results of the HADES experiment. TGIF seminar.

Dublin Institute for Advanced studies, February.

nRavaut C., A. Chabert, L. Gernigon, B.M. O’Reilly,

P.W. Readman and P.M. Shannon, A wide-angle seismic

study of the Hatton Continental margin: Preliminary

results from the HADES project. 48th Annual Irish

Geological Research Meeting, Trinity College Dublin,

Ireland, 18-21 February.


35


nGernigon, L., C. Ravaut, P.M. Shannon, A. Chabert,

B.M. O’Reilly and P.W. Readman, Contrasting styles

between the structure of the West and South Hatton/

Rockall Margins (Irish offshore). 48th Annual Irish

Geological Research Meeting, Trinity College Dublin,

Ireland, 18-21 February.

nChabert, A., C. Ravaut, B.M. O’Reilly, P.W. Readman,

P.M. Shannon, and L. Gernigon, The Hatton Basin: wide-

angle seismic imaging from the HADES Experiment. 48th

Annual Irish Geological Research Meeting, Trinity College

Dublin, Ireland, 18-21 February.

nRavaut C., A. Chabert, L. Gernigon, B.M. O’Reilly,

P.W. Readman, P.M. Shannon, J. Makris and M. Gaye,

Wide-angle seismic imaging of the west Hatton margin

(North Atlantic): Results of the HADES experiment.

European Geosciences Union (EGU) General Assembly,

Vienna, Austria, 24-29 April.

nGernigon, L., C. Ravaut, P.M. Shannon, A. Chabert,

B.M. O’Reilly and P.W. Readman, Formation and evolution

of Irish passive margins: implications for locating the

transition between continental and oceanic crust.

European Geosciences Union (EGU) General Assembly,

Vienna, Austria, 24-29 April.

nChabert, A., C. Ravaut, L. Gernigon, P.W. Readman,

B.M. O’Reilly and P.M. Shannon, Wide-Angle Seismic

imaging of the Hatton Basin. BGA PGM, Galway,

31 August - 2 September.

nReadman, P.W., P.M. Shannon, B.M. O’Reilly, C. Ravaut,

A. Chabert and L. Gernigon, Deep seismic research in

the Irish Atlantic. Irish National Seabed Survey, Annual

Workshop, Cork, 18 November.

4 .2 RAPIDS 3 and 4

BM O’Reilly, PW Readman with PM Shannon (UCD)

In the RAPIDS (Rockall And Porcupine Irish Deep Seismic)

series of projects modelling of the wide-angle seismic line

across the Porcupine Arch was continued and refined. An

anomalous velocity body is detected beneath the basin centre,

in agreement with our gravity interpretation. The crust is

either very thin or absent and the presence of this body,

interpreted as serpentinised mantle, is consistent with our

ideas about basin development in the NE Atlantic. These ideas

will be further tested within our ongoing NABASK (North

Atlantic BASin Kinematics) and the Cosmogrid rheological

modelling projects.

Publications:

nO’Reilly, B.M., F. Hauser, C. Ravaut, P.W. Readman and

P.M. Shannon. Crustal thinning, mantle exhumation and

serpentinisation in the Porcupine Basin, offshore Ireland:

Evidence from wide-angle seismic data. Journal of the

Geological Society, London, in press.

nN.C. Morewood, P.M. Shannon, G.D. Mackenzie,

P.W. Readman, B.M. O’Reilly and J. Makris, 2005. The

crustal structure and regional development of the

Irish Atlantic Margin region. In: Petroleum Geology of

Northwest Europe: Proceedings of the 6th Conference,

The Geological Society, London, 1023-1033.

4 .3 ISLE

PW Readman, VC Do and BM O’Reilly with Geophysics staff,

and colleagues from the University of Karlsruhe

The Irish Seismological Lithospheric Experiment (ISLE)

continued collecting data from 6-7 broadband stations,

following the phase II deployment during 2004, and two

new stations were installed. Some solid results on shear-wave

splitting have been obtained at both of the Irish permanent

stations VAL and DSB that have been supported by the results

from the temporary ISLE network.

The results indicate a component of the observed anisotropy

related to the Caledonian (ca 400 Ma) closure of the Iapetus

Ocean, with another second component, observed in data

from earthquakes in South America, resulting from a deeper

source in the mantle to the west of Ireland. At this stage a

core-mantle boundary origin cannot be discounted because

of the limited range of back-azimuths available in the data

recorded to date. Data collection is therefore continuing in

order to extend the azimuthal coverage.

Data from our previous controlled source wide-angle seismic

experiment in southwest Ireland (VARNET – VARiscan

NETwork) is also being used to investigate the crustal

36

contribution to the observed anisotropy. The results from Sg

analyses give no evidence of any major difference in delay

time between NS and EW components (up to 0.2 seconds,

at most), i.e. there is no strong anisotropy in the upper crust,

and so little contribution from the upper crust to the overall

observed anisotropy (delay times average 1.2 s). We are now

analysing SmS to study the anisotropy of the lower crust.

Collaboration with our Karlsruhe colleagues on the receiver

function study has continued.

Publications:

nDo, V.C., P.W. Readman and B.M. O’Reilly, 2006. Shear-

wave splitting observation across southwest Ireland,

Geophysical Research Letters, in press.

nLandes, M., J.R.R. Ritter, B.M. O’Reilly, P.W. Readman

and V.C. Do, A N-S receiver function profile across the

Variscides and Caledonides of SW Ireland. Geophysical

Journal International, under review.

Presentations:

nDo, V.C., P.W. Readman and B.M. O’Reilly, Back-azimuthal

variation of shear-wave splitting in south west Ireland,

British Geophysical Association Post-grad research

meeting, Galway.

nDo, V.C., P.W. Readman and B.M. O’Reilly, Shear-wave

splitting measurements from teleseismic and active-source

data across the Iapetus Suture Zone in Ireland: preliminary

results, EGU General Assembly Meeting, Vienna,

24-29 April.

nDo, V.C., P.W. Readman and B.M. O’Reilly, Investigation

of crustal and upper mantle anisotropy across the Iapetus

Suture Zone in Ireland using shear-wave splitting analysis

from teleseismic and active-source data: preliminary

results, Irish Geological Research Meeting, Dublin,

18-21 February.

nDo, V.C., P.W. Readman and B.M. O’Reilly, Deep source

anisotropy revealed from back-azimuthal variation of

shear-wave splitting in southwest Ireland, American

geophysical Union, Fall Meeting, San Francisco,

5-9 December.

4 .4 EAGLE

BM O’Reilly with GR Keller (UTEP) and PKH Maguire (Leicester)

and the EAGLE Working Group

A paper was prepared on the crustal and upper mantle structure

of the Northern Main Ethopian Rift using the tomographic

and forward modeling results from the three controlled source

seismic profiles. The implications of the results for incipient

lithospheric breakup were discussed in a geological context.

Publications:

nP.K.H. Maguire, G.R. Keller, S.L. Klemperer, G.D. Mackenzie,

K. Keranen, S. Harder, B.M. O’Reilly, H. Thybo, L. Asfaw

and M. Amha, 2005. Crustal structure of the Northern

Main Ethiopian Rift from the EAGLE controlled survey;

a snapshot of incipient lithospheric breakup. Geological

Society of London, in press.

4 .5 TRIM

BM O’Reilly and PW Readman

Two papers detailing results from the TRIM (TOBI Rockall Irish

Margins) project were prepared and submitted during the

early part of the year. Another paper detailing Plio-Pleistocene

sedimentation processes on the eastern margin of the Rockall

Trough is at an advanced stage of preparation.

Publications:

nB.M. O’Reilly, P. W. Readman and P.M. Shannon, 2005.

Slope failure, mass flow and bottom current processes in

the Rockall Trough. First Break, 23, 45-50.

nElliot, G.M., P.M. Shannon, P.D.W. Haughton, D. Praeg

and B.M. O’Reilly, 2005. The morphology and evolution of

the sediment undersupplied mid- to late Cenozoic eastern

margin of the Rockall Trough, west of Ireland. Marine

Geology, in press.

In preparation:

nO’Reilly, B.M., P.W. Readman and P.M. Shannon. Shelf to

slope sedimentation processes in the northeast Atlantic,

off NW Ireland, and the impact of Plio-Pleistocene

glaciations. For submission to Marine Geology.


37


4 .6 NABASK

PW Readman and BM O’Reilly

The NABASK (North Atlantic Basin Kinematics) project

combines our work in the Rockall, Hatton and Porcupine

Basins with the aim of developing a unified development

model for the Irish Northeast Atlantic offshore region. An

informal presentation on our recently developed ideas

about the evolution of the North Atlantic Basin System and

connections with the eastern Canadian basin system was

given at an invited workshop on ‘Plate reconstruction of

Atlantic Ireland’.

Publications:

nP.W. Readman, B.M. O’Reilly, P.M. Shannon and D. Naylor,

2005. The deep structure of the Porcupine Basin, offshore

Ireland, from gravity and magnetic studies. In: Petroleum

Geology of Northwest Europe: Proceedings of the 6th

Conference, Geological Society, London, 1047-1056.

nB.M. O’Reilly, F. Hauser, C. Ravaut, P.W. Readman and

P.M. Shannon. Crustal thinning, mantle exhumation and

serpentinisation in the Porcupine Basin, offshore Ireland:

Evidence from wide-angle seismic data. Journal of the

Geological Society, London, in press.

Presentations:

nO’Reilly B.M. and P.W. Readman, Regional trans-

Atlantic linkages between Irish and Canadian offshore

basins, Petroleum Affairs Division Workshop on Plate

recontruction of Atlantic Ireland, Naas, 12-14 October.

4 .7 The Seismic Network

TA Blake, G Wallace, C Horan and L Collins

4.7.1 General

The east coast of Ireland on December 14th at 03:30

experienced a small earthquake estimated at 2.8 Richter

Magnitude with epicentre 30 km off Wicklow Head. Its effects

were felt by a large number of the population and there were

90 responses to our electronic questionnaire asking people

to report what they felt. The most intense reaction to the

earthquake was a 10 m cliff collapse on Killiney beach. There

were no fatalities. The earthquake generated considerable

public reaction in the printed and tv/radio media with media

interviews being given by AG Jones and TA Blake.

4.7.2 Maintenance activities

General maintenance activities carried out during the year on

DSB were as follows:

nmonitoring humidity to ensure stable environment for

STS2 sensor,

nmonitoring of the quality of GPS signal and removal of

vegetation that obscured this signal,

nreplacement of the 56k modem following damage from a

lightning storm,

nrepairs to the Amp-Mod and transmitter cabling, and

nreplacement of the seismometer at DMUB (Muff).

4.7.3 DIAS network

DIAS initiated – and has been funding when possible – the

ad hoc development of a regional seismic network since

1978. A supplementary budget is now required if the network

is to be developed to acceptable international standards

(see below). From an already failing seismic network DIAS

continues to supply important waveform data to the

international seismological community.

4.7.4 DSB

Waveform data quality from DSB (the German GeoFON

station operated by DIAS) continued to be good and the

data are archived in both GFZ Potsdam and in DIAS. Data

are downloaded directly to GFZ via 56k modem and are

available via internet usually within an hour (although this

has on occasion been over two hours). The data can be seen

online at this address: http://www.gfz-potsdam.de/geofon/

gfn_liveseis.html. DIAS personnel collect the DAT tape of data

every 4 weeks from DSB.

4.7.5 Irish National Seismic Network

AG Jones, TA Blake

The case is being made for a major rejuvenation of the

DIAS seismic array and to bring into place an Irish National

38

Seismic Network using modern sensors with real-time data

transmission, processing, analysis and archiving.

n17 April: Case made to Chief Science Advisor, Dr. Barry

McSweeney.

n24 October: Submission to Minister of State, Mr. Batt

O’Keeffe. Sent on to Mr. N. Dempsey (Minister for

Communications, Marine and Natural Resources). Reply

received dated 22 December (Dempsey) and 29 December

(O’Keeffe).

nNeed for INSN supported by Royal Irish Academy’s

Geosciences Committee.

4 .8 Other

Pre-proposal submissions:

nPre-proposal submitted by P.W. Readman to the SFI

RFP2006 competition: The 3-D distribution of anisotropy

variations below Western Eurasia from teleseismic receiver

functions using a temporary broadband seismic array in

Ireland.

nPre-proposal submitted by B.M. O’Reilly to the SFI

RFP2006 competition: Crustal and upper mantle structure

along the axis of the Porcupine Basin from a detailed

offshore/onshore wide-angle seismic experiment:

implications for tectonic extension of the Earth’s

lithosphere.

Publications:

nLandes, M., J.R.R. Ritter, P.W. Readman and B.M. O’Reilly,

2005. A review of the Irish crustal structure and its

signatures from the Caledonian and Variscan orogenies.

Terra Nova, �7, 111-120.

IRCSET fellowship:

nCeline Ravaut was awarded a fellowship under the IRCSET

Postdocrtoral Fellowship scheme to study “Quantitative

seismic imaging of the Hatton Continental margin using

frequency-domain full-waveform inversion” working with

P.W. Readman and B.M. O’Reilly. This will also include

collaboration with members of the Cosmosgrid group and

with Géosciences Azur laboratory in Nice, France.

5. Geodynamic ModellingT Yamaski, J Sheehan, BM O’Reilly and PW Readman

Yamasaki has concentrated on studying the following

topics: (1) Grain-size related rheological weak zones possibly

controlling the mode of lithospheric extension, (2) the role

of strain hardening on rift dynamics, (3) factors controlling

the uplift of the Transantarctic Mountains in Antarctica, and

(4) localized deformation in volcanic passive margins brought

about by the magmatic underplating.

Publications:

nYamasaki, T. and T. Seno, 2005. High strain rate zone in

central Hoshu resulting from the viscosity heterogeneities

in the crust and mantle. Earth and Planetary Science

Letters, 232, 13-27.

nYamasaki, T., B.M. O’Reilly and P.W. Readman, A rheological

weak zone intensified by the postrift thermal relaxation as

a possible origin of strain localization associated with the

reactivation of rifting. Submitted to Tectonophysics.

Presentations:

nYamasaki, T., Rheological modeling of large-scale Earth

structures and Cosmogrid re-sources, CosmoGrid

Conference, Dublin, 19 January.

nYamasaki, T. and H. Miura, Passive Margin Uplift

Associated with Gondwana breakup possibly controlling

the global climate change, IGRM, Dublin, 18-21 February.

nYamasaki, T., Localized rheological weakening by grain-

size reduction as a possible origin of asymmetric extension

associated with reactivation of rifting, Vienna, EGU,

Austria, 24-29 April.

nSheehan, J., Rheology and the Porcupine Basin, BGA

PGM, Galway, 31 August - 2 September.

nSheehan, J., Rheology and the Porcupine Basin, 9th

International Workshop on Numerical Modeling of Mantle

Convection and Lithospheric Dynamics, Erice, Italy,

8-14 September.


39


Papers in preparation:

nYamasaki, T., H. Miura and Y. Nogi, Factors controlling

the flexural uplift of the Transantarctic Mountains. For

submission to Geophysical Journal International.

nYamasaki, T., Some remarks on the cessation of rifting

under constant tectonic force: Role of strain hardening

on rift dynamics. For submission to Earth and Planetary

Science Letters.

6. Technical/Support Activities

6 .� Technical Support

G Wallace, C Horan, L Collins and JE Spratt

In addition to the maintenance, testing and shipping of field

equipment (including seismic network equipment), technical

staff are involved in the deployment and retrieval of the

equipment and data processing for the following projects: ISLE

and ISLE-MT, SAMTEX, Birr Castle DC Resistivity, and Cork AMT.

Support for the running of the seismic networks continued

with management of the back up, processing and archiving

of the network data and advice on and testing of new

instrumentation and back-up procedures.

Maintenance and redesign of the Geophysics web page was

undertaken during the year, as well as the production of

graphics for papers, publications and posters.

6 .2 Computer Network

J Allman

John Allman joined the Section as manager of IT from early-

January. Allman’s primary responsibility is the Windows-based

machines within the School, and together with Dudzinski (IT

Manager, Astro) providing user-support across the School and

network backup.

Allman has initiated a number of procedures aimed at

providing a secure and efficient network. Notable changes

include:

nImplemented centralised user management so that there

is one set of account details for both Linux and Windows.

nMoved all user and project data onto new dedicated

“homes” servers and standardising home directories to

/home/username.

nBegan separating out project and personal data for ease

of management and backup.

nInstalled anti-virus software on all Windows desktops,

keeping virus definitions and scanner software constantly

up-to-date with an automated system.

nInstalled a system for deploying Windows software so

keeping machines up-to-date is a trivial task.

nInstalled an inventory system for tracking software and

hardware on all desktops (both Windows and Linux).

nNumerous network design and configuration modifications

to improve security and performance, including separating

services to mitigate any abuse and the installation of a

firewall to filter unwanted traffic and analyse and log

traffic that looks like a network-based attack.

7. Collaboration with Wider Research Community

7 .� DIAS-UB Collaboration

Collaboration continued under the auspices of the agreement

between DIAS and the University of Barcelona (UB). Staff and

students from UB came to DIAS for visits. Jones spent a month

at UB (9 Oct. - 9 Nov.) and Moorkamp and Hamilton spent

almost 3 months there (early-October to mid-December).

Whilst at UB Jones worked together with UB colleagues on

two papers for submission to international journals, he played

a significant role in aiding UB colleagues in their work to

organize the 18th EM Induction Workshop, to be held in El

Vendrell (south of Barcelona) in September, 2006, he formed

a tri-national working group with DIAS-UB-UP (University of

Pisa) to study volcanoes, and planned further collaborative

activities.

40

7 .2 Visitors to the Section

nProf. David Eaton, Visiting Professor, from Department

of Earth Sciences University of Western Ontario, on

sabbatical leave at DIAS, November 2004 to April 2005.

nProf. Michel Weber, Visiting Professor, from

GeoForschungsZentrum Potsdam. May-July, 2005.

(Dedication to DIAS in Preface to English translation of

Theory of Elastic Waves by Gerhard Müller.)

nDr Franz Hauser from the Geophysical Institute, University

of Karlsruhe visited from July - September.

nProf. W. Siripurnaporn (Bangkok, Thailand), Dr. R. Mackie

(Geosystem, USA) and Dr. Y. Ogawa (TITECH, Tokyo)

gave invited lectures as part of the SAMTEX Modelling

Workshop, 2-13 May.

nProf. G. Egbert (U. Oregon, USA), for a week in August to

demonstrate his processing code.

7 .3 Other Collaborative Activities by Section members

nGarcia continues his collaboration with Woods Hole

Oceanographic Institution working on the geomagnetic

observatory.

nGarcia processes marine EM data as part of the SHELF

experiment. The results are going to be analysed by Phil

Wannamaker at the University of Utah, as part of the SEA

project in which Jones led the LMT acquisition.

8. Public OutreachnBlake interviewed by Irish Times and RTÉ 9 o’clock News

subsequent to second Sumatra event.

nInformation and seismograms of December 2004 Sumatra

and recent Pakistan events were sent to all ISLE station

minders and landowners. Information and seismograms of

the December 2004 Sumatra event was also sent to the

manager of the Kerry Geopark Project.

nOn 22 February Tom Blake gave a lecture to transition year

students at the Loreto Convent in Crumlin on “Earthquakes

and Seismology in Ireland and Robert Mallet”.

9. Training UndertakennWinGLink training course, Milan, Italy, 8-12 May:

L. Collins, M. Hamilton, J.E. Spratt, U. Weckmann.

nCorelDraw Second Level course, DIAS: C. Horan.

10. Health and Safety MeasuresnFirst Aid training course, Burlington House, August:

A. Chabert, L. Collins, M. Hamilton, J. Sheehan, J.E. Spratt.

nDocument prepared by J.E. Spratt on Fieldwork Health

and Safety for the SAMTEX Phase III fieldwork.

nInternal Safety Audit carried out by T. Blake (Merrion

Square Safety Officer) and C. Horan (Merrion Square Staff

Representative).

11. MiscellaneaX Garcia

nPresented lecture on electrical and electromagnetic

methods to undergraduate students at Trinity College

Dublin.

nAdvisor on Marine EM methods to Providence Resource, Inc.

M Hamilton

nPresented lectures to undergraduate students at the

University of the Witwatersrand.

AG Jones

nEditorial Board, Earth, Planets and Space.

nAssociate Editor, Journal of Geophysical Research.

nActing Editor, Special issue of Physics of the Earth and

Planetary Interiors devoted to Continental Anisotropy.

nAdjunct Professor, Syracuse University, Syracuse, NY, USA.

nAdjunct Professor, Queen’s University, Kingston, Ontario,

Canada.

nAdjunct Professor, NUI Galway, Ireland.

nVisiting Professor, Trinity College Dublin, Ireland.


4�


nVisiting Scientist, Geological Survey of Canada.

nMember, Natural Sciences and Engineering Research

Council of Canada (NSERC) Grant Selection Committee

for the Earth Sciences.

nMember, Irish Geoscience Initiative Committee.

nWebmaster, MTNet (www.mtnet.info)

BM O’Reilly

nEditorial Board, Irish Journal of Earth Sciences.

PW Readman

nMember, Consultative Committee of the Geological

Survey of Ireland.

nTitular Member, European Seismological Commission.

nMember, Irish Geoscience Initiative Committee.

nMember, Marine Institute Third Level Liaison Committee.

nPanel Member, Marine Institute Marine Foresight Exercise.

nResearch Associate, UCD.

42

School of Theoretical Physics

1 Report on Research Work

� .� Work by Senior Professors and Collaborators

1.1.1 Anderson Localisation

(T.C. Dorlas, J.V. Pulé & C. Dobrovolny)

The collaboration with Prof. Joe Pulé (UCD) on Anderson

localisation in one-dimensional systems was continued in

collaboration with a postdoctoral student, Dr. Christophe

Dobrovolny. We started by computing the Lyapunov exponent

of the 1-dimensional Anderson model, to second order in the

disorder strength. The power series for the invariant measure,

from which the Lyapunov exponent can be derived, was

shown to diverge at certain values of the energy by Kappus

and Wegner, and in more detail, Derrida and Gardner. In

particular, they found that at zero energy, i.e. in the middle

of the band, the invariant measure is discontinuous in the

limit of zero disorder. In our previous work, we showed that

this situation persists for two chains, and in a sense becomes

worse. We now also extended a method due to Pastur to

the case of several chains. We found analogous but subtly

different results from those obtained by Schulz-Baldes. The

origin of these discrepancies is so far unclear.

We have also extended this analysis to the nanotube, where

it becomes quite complicated. However, the main conclusion

is that the Lyapunov exponent behaves in the same way as

the width of the tube varies as in the case of the Anderson

model. The work is to be continued into 2006.

1.1.2 Long Cycles for Bose-Einstein Condensation

(T.C. Dorlas, P. Martin & J.V. Pulé)

The Feynman-Kac representation of Bose gas with interaction

involves a sum over permutations due to the Bose symmetry.

These permutations can be decomposed into cycles, and it

was predicted by Feynman, and more precisely by Onsager

and Penrose, that Bose-Einstein condensation can be

characterised in the Feynman-Kac representation of the

partition function, by the occurrence of very long cycles with

high probability. This suggestion was proved in the case of

a free gas and also for a gas with mean-field interaction, by

Sütö. In collaboration with Profs. Philippe Martin (Lausanne)

and Joe Pulé (UCD), it was shown, using Large Deviation

techniques, that this conjecture is also valid in the case of the

perturbed mean-field model, introduced by Profs. John Lewis,

Joe Pulé and myself in 1990. This result was reported in [05-

05] and published in [2].

1.1.3 Quantum Information

(T.C. Dorlas & N. Datta et al.)

In collaboration with a group in Cambridge, it was shown that,

in contrast with classical information, quantum information

can in some cases be transported in a network over large

distances in finite time and with probability 1. In a cubic lattice,

for example, it was shown that the time remains finite as the

dimension tends to infinity. Classically, the time tends to infinity

exponentially. The exponential rate was computed explicitly for

this case. The results were published in [3].

1.1.4 The Asymmetric Exclusion Process

(T.C. Dorlas & V.B. Priezzhev)

The project in collaboration with V. B. Priezzhev concerning

the exact solution of this model on a ring was continued.

The model had been solved previously on an infinite line

by Schütz, but for the understanding of the approach to

equilibrium the ring geometry is more appropriate. Previously,

Priezzhev had introduced a modification of the Bethe Ansatz

method which allows an exact solution of the problem on a

ring. However, the resulting equations are rather complicated

and it is not a straightforward exercise to derive explicit

expressions for physical quantities from these. In fact, even

the simple fact that the total probability of all configurations

at time t > 0 equals 1, is not trivial to prove. This

normalisation of the total probability was proved last year. We

proceeded by evaluating the Bethe Ansatz expression for the

probability that a particle reaches the end of the interval in

time t, and we analysed its asymptotics. The result is reported

in [05-08].

43


1.1.5 Quantum Hall Effect in Graphene

(W. Nahm & M. Leitner)

When M. Leitner joined DIAS a collaboration was started

about the quantum Hall effect for relativistic fermions,

the topic of her PhD thesis. Recently the existence of the

effect has been demonstrated in graphene, a 2-dimensional

sheet of graphite, which probably will become a major

electronic material in the future. When the space and time

reflection symmetries of this material are broken by magnetic

impurities, spontaneous edge currents are predicted to occur

at low temperature. These could be switched on and off by

suitable modifications of the boundary, which would allow

for very efficient nanoscale computing. Before we proceed,

we are looking for reasons why the idea might not work.

One potential problem is the influence of the boundary

modifications on the bulk Hall currents near the edge, which

conceivably might mask the change in the boundary currents.

Our calculations indicate that this is not a problem, however.

1.1.6 Vanishing Theorems

(W. Nahm & F. Laytimi)

Research with F. Laytimi on vanishing theorems for ample

vector bundles continued. A paper with a new vanishing

theorem for the Dolbeault cohomology of bundles arising as

a tensor product of exterior powers was published in [9]. It

was shown that the conditions for the vanishing given by the

theorem are optimal for a large range of parameters.

1.1.7 Integrable Quantum Field Theories and

Quantum Groups

(W. Nahm)

Work on the characters of conformal field theories with

integrable perturbations lead to algebraic equations which

are satisfied by the characters of quantum groups. At the

moment this relationship is hard to explain. The equations

first turned up in work by Kirillov and Reshetikhin, which is

quite obscure (and no longer understood even by its authors),

but based on integrable lattice models, which are now being

studied. Much of the fundamentals about those models is

described as a bag of tricks and difficult to assimilate by

newcomers to the area. To better understand it a course is

given based on Baxter’s book on ‘solved models’, where I try

to rewrite the material in a more accessible form. In particular,

the elliptic functions are unnecessary and can be replaced by

easy algebraic geometry. It is intended to write up the course

as a DIAS communication.

1.1.8 Fuzzy Physics

(Denjoe O’Connor)

Research in 2005 continued on the construction of suitable

fermionic field theories on fuzzy spaces and on the

preparation of fuzzy supersymmetric field theory models

for Monte-Carlo simulations. Simulations were commenced

on a scalar fermion model that is supersymmetric in the

planar limit. This model was chosen due to its simplicity and

the restriction to a supersymmetric planar limit restricts the

parameter space to be explored.

Fuzzy field theories are field theories where the background

space is a fuzzy one, i.e. one where the algebra of functions

of a manifold is replaced by a suitable matrix algebra, with

matrix dimension N, and the Laplace-Beltrami operator

by a suitable Laplacian mapping matrices to matrices of

the same dimension. The triple of Matrix algebra, norm

and Laplacian defines the geometry

of the fuzzy space.

The fuzzy approach is ideally suited to the study of

supersymmetric models as it is possible to truncate the theory

to a finite number of degrees of freedom while retaining

the exact supersymmetry. The ingredients are a graded

matrix algebra, where the matrix entries now contain both

commuting and anti-commuting (or Grassmann) entries and

the trace over matrices is replaced by a supertrace.

The theoretical aspects of the research are being carried out

with Brian Dolan, Seçkin Kürkçüoğlu and Marco Panero.

The simulations will be performed by Marco Panero, Xavier

Martin (Tours) and Wolfgang Biedenholz and his student, Jan

(of Berlin). The research will be ground breaking in that it will

be the first non-perturbative study (a Monte-Carlo study) of

supersymmetric models using this approach.

44


1.1.9 Fuzzy Physics and Monte Carlo Simulations

(Denjoe O’Connor, X. Martin, F.G. Flores and J. Medina)

Numerical work (with Fernando Garcia and Xavier Martin) was

carried out on a φ4 scalar field model on the fuzzy sphere. The

fuzzy sphere is a discretization of the sphere through N × N

matrices in which the symmetries of the space are preserved.

This model presents three different phases: uniform ordered and

disordered phases, as in the usual commutative scalar field theory,

and a nonuniform ordered phase related to UV-IR mixing like

non-commutative effects. We determined the coexistence lines

between phases, their triple point and their scaling.

A three dimensional φ4 model was studied numerically in a

collaboration with Julieta Medina and Wolfgang Bietenholz and

Frank Hofheinz. The regularization consists on a fuzzy sphere with

radius R for the two spatial directions, plus a lattice discretised

Euclidean time. We evaluated the phase diagram, where we

find as in the case of the two dimensional model a disordered

phase and an ordered regime which splits into uniform and non-

uniform order phases. In contrast to the two dimensional model

we found that there was no consistent collapse in terms of the

matrix size of the different transition lines.

The behaviour of the models in different limits for large N

and R leads to a commutative or to a non-commutative

φ4 model in flat space as far as the action is concerned.

However, further work was necessary to clarify these limits in

the nonperturbative setting.

A third numerical study of non-commutative gauge fields

on the fuzzy sphere was commenced with Badis Ydri and

Rodrigo Delgadillo. Preliminary results indicate that the model

exhibits a rich phase structure with a novel phase described

by a one plaquet model.

� .2 Independent Work by Fellows

1.2.1 Theoretical and Computational Studies of

Field Theories on Fuzzy Supersymmetric Spaces

(S. Kürkçüoğlu)

The Supersphere is the adjoint orbit of the Lie

supergroup and can be expressed as the quotient

. It is obtained through quantizing

this orbit. It is described by a finite-dimensional matrix

algebra, which in the infinite-dimensional limit approaches the

algebra of functions on the supersphere. is especially

interesting since it preserves the symmetry of

and thereby allows an exact treatment of supersymmetry in

a discrete setting. It is already known that field theories on

can be expressed as finitedimensional matrix models.

In addition, non-trivial field configurations, such as nonlinear

sigma models can be formulated on . On the more

formal side, it is known that is endowed with an

associative *-product.

The interest of the collaborators on this topic is focused on

investigating the formulation of quantum field theories(QFTs)

on , with polynomial interactions. Initial focus of the

research has been on obtaining a formulation, which could

be readily used to apply computational techniques. For this

purpose, group theoretical methods to analyze the detailed

structure of the kinetic term in the action of a free real

superfield has been employed. The addition of a mass and

polynomial interaction terms to the free superfield action

appeared as a highly nontrivial stage in this investigation,

which initially was not anticipated. This problem has been

partially resolved and several alternative methods are under

examination to reach a fully successful outcome. The progress

on this topic is being prepared as an article for publication.

1.2.2 Time-Space Non-commutativity and Waves

(S. Kürkçüoğlu, A.P. Balachandran & K.S. Gupta)

During this period, Dr. Kürkçüoğlu continued his collaborations

initiated prior to his arrival at DIAS. Specifically, in

collaboration with Professor A.P. Balachandran from Syracuse

University (Syracuse NY, USA) and Professor K.S. Gupta

from Saha Institute (Calcutta, India), Dr. Kürkçüoğlu has

investigated the general theory of waves in spacetimes where

time and space coordinates do not commute. Research on

this topic was initially motivated by the recent developments

in formulation of explicitly unitary quantum theories on

non-commutative(NC) spacetime, where time and space

coordinates do not commute. However, many physical

predictions of this theory were the same as those of the

usual quantum mechanics, while it was anticipated that new

features would arise in interference phenomena. With these

45


motivations the physics of waves in time-space NC spaces

is studied. It is well-known that waves on “commutative”

spacetimes like are elements of the commutative algebra

of functions on . When is deformed

to a non-commutative algebra with deformation

parameter , waves being its

elements, are no longer complex-valued functions on .

Thus a generalized set of rules for their interpretation, such

as measurement of their intensity, and energy is needed.

The investigations first addressed this task. Subsequently,

these rules were applied to interference and diffraction

for d ≤ 4 and with time-space non-commutativity. Novel

phenomena are encountered. It has been found that there

are circumstances under which the interference pattern

is completely lost, while in other cases it is deformed and

depends on the ratio , where is the NC parameter, T is

the time of observation and w is the frequency of incident

waves. These results are then applied to the interference of

star light due to cosmic strings, and used to predict a bound

on below which interference may be observed.

1.2.3 Fuzzy and SUSY Fuzzy Physics:

(S. Kürkçüoğlu, A.P. Balachandran & S. Vaidya)

Dr. Kürkçüoğlu together with Professor A.P. Balachandran

from Syracuse University and Professor S. Vaidya from IISc

Bangalore, India, have recently completed a book reviewing

the developments that have happened in the past decade or

so in the field of fuzzy and supersymmetric fuzzy physics [05-

12]. The book is an outcome of an ongoing effort for almost

two years and was initiated prior to Dr. Kürkçüoğlu’s arrival

at DIAS. It reviews the geometrical aspects of fuzzy spaces,

as well as the theory of scalar, spinor and gauge fields on

fuzzy spaces. The projective module approach to construct

fuzzy solitons is also covered with examples. Since it has been

placed in the preprint arXiv, it has received very encouraging

feedback from the scientific community. At present the

collaborators are in the process of revising it in the light of

this feedback and will be contacting publishers very soon

regarding its formal publication.

1.2.4 Gravity Theories on Non-commutative Spaces

(S. Kürkçüoğlu, A.P. Balachandran & T.R. Govindarajan)

Dr. Kürkçüoğlu has collaborated with Professors A.P.

Balachandran, K.S. Gupta and T.R. Govindarajan (IMSC,

Chennai, India) on formulation of lower dimensional gravity

theories on non-commutative spaces. This research has been

motivated by the recent developments due to Chaichian et

al. and Aschieri et al. who reported that a so-called “twisted”

Poincaré and diffeomorphism symmetry is consistent with

field theories on NC spaces. To be more precise, they have

demonstrated that Poincaré and diffeomorphism group act

as an automorphism on the algebra of functions over the

NC space, if the coproduct associated with these symmetries

is suitably deformed. The collaborators recognized that

these developments open possibilities for many interesting

developments, one such being the study of gravity in NC

spaces, already pursued to get the NC version of the Einstein-

Hilbert action. However, due to the complicated nature of

this action new physics is hard to extract. Thus Dr. Kürkçüoğlu

and his collaborators considered that new physics could be

probed first in lower dimensional gravity theories. In this

regard the collaborators have succeeded in formulating

a twisted generally covariant, NC gauge theory of 1 + 1

dimensional gravity. It has been verified that this theory

has the commutative AdS2 space as a solution. In a certain

contracted limit of the gauge group the NC version of the

dilaton gravity theory has also been obtained. It is known

that the latter has a black hole solution, and studies of the

collaborators have shown that it too is a solution for their

NC theory. This work was initiated during a workshop in IISc

at Chennai that Dr. Kürkçüoğlu participated in during July-

August. A substantial part of this work was completed during

T.R. Govindarajan’s visit to DIAS in the Fall and a first draft

of the article discussing these results will be uploaded to the

arXiv in early 2006.

The collaborators conceive this study as a first step in a long

term research program. Within this program it has been

foreseen that a range of related problems could be studied.

In the near future investigations will be directed at the

addition of matter sources, where there are some preliminary

indications that novel results will emerge. At the next stage

a plan to make a survey study of NC 2 + 1 gravity in terms

46


of suitable NC Chern-Simons theories is in order. Also in

this context, obtaining concrete results on non-commutative

deformations of BTZ black holes is another objective.

1.2.5 Non-commutative Conformal Symmetries

(S. Kürkçüoğlu)

Dr. Kürkçüoğlu examined how the Virasoro symmetries

can be “twisted” to implement them on NC spaces. Some

preliminary results in this direction have been obtained.

During the course of this research a new associative

*-product on the NC plane has been discovered. In

addition, to its dependence on the NC parameter, this

*-product also depends on the conformal dimensions of

the objects being multiplied. Research at present is focused

on analyzing the physical consequences of these rather

technical developments.

1.2.6 Fuzzy Cosets of SU(3)

(S. Kürkçüoğlu)

In the Fall, Dr. Kürkçüoğlu initiated studies on the structure of

fuzzy cosets of SU(3). This study is particularly focused on the

fuzzy version of the coset space SU(3)/[U(1) ⊗ U(1)]. In this

context, SU(3) coherent states appropriate for this space have

been obtained and ongoing research is directed at obtaining

the associated *-product to better understand its geometry.

These studies could be considered as the initial steps of a

comprehensive study of many aspects of field theories on

the fuzzy SU(3)/[U(1) ⊗ U(1)]. In particular, it is planned to

direct investigations at obtaining the appropriate fuzzy Dirac

operator to introduce spinors. The index theory of such a

fuzzy Dirac operator would be yet another intriguing problem,

which is to be studied in the later stages of this project.

1.2.7 Regularizing NC QFTs

(S. Kürkçüoğlu, M. Panero & T.R. Govindarajan)

Recently, a collaboration was started between Dr. Kürkçüoğlu,

Dr. Marco Panero and Professor T.R. Govindarajan on using

nonlocal regularization techniques to study the structure of

NC quantum field theories at one loop. In this approach NC

parameter and the cut-off parameter are taken to be related

through a dimensionless parameter . NC φ4

theory is being used as a testing ground for developments.

For all finite values of , it is easy to see from the work of

Minwalla et al. that UV-IR mixing, does not occur whereas in

the limit UV-IR mixing is encountered. Preliminary

calculations using this new approach on NC φ4 theory indicate

that renormalized mass receives corrections that depend on

this dimensionless parameter. Right now calculations are

underway to obtain the 4-point functions of φ4 theory at one

loop and the aim is to construct the phase diagram of the

theory as function of Λ and and compute the β-function

at this order. It is expected that this result will agree with

β-function that could also be extracted from the results of

loop integrals of Minwalla et al. by demanding the above

relation between and Λ. It is also expected that these

steps will help the collaborators to build a certain level of

confidence to this approach and proceed to apply it to QED.

1.2.8 Non-Commutative Geometry

(M. Panero)

Non-Commutative geometry, which was originally introduced

as a tool to solve the problem of divergences arising from

the quantum approach to field theories, has a number

of implications of physical relevance in various fields

(phenomenology, quantum gravity, quantum Hall effect, string

theory to mention some), which make it one of the most

popular research topics in mathematics and physics today.

One of the central issues arising from the non-commutative

geometry approach is the mixing between ultra-violet and

infra-red (UV/IR) degrees of freedom: a phenomenon

which can be predicted by perturbative calculations of

non-commutative theories. Research work was started,

which focused on a perturbative approach to quantum field

theories in non-commutative space-time, with a nonlocal

regularisation; this approach may provide a link to connect

the high-energy dynamics and the renormalisation group

approach à-la Wilson-Kadanoff.

1.2.9 Fuzzy Physics

(M. Panero, Denjoe O’Connor and students)

The Fuzzy Physics approach, which gives an elegant, highly

symmetric, and mathematically well-defined regularisation

scheme for Quantum Field Theories, allows one to address

47


non-perturbative studies of field theories, providing a natural

representation in terms of finite-dimensional matrix models.

This setting can be studied theoretically and numerically, via

Monte Carlo simulations alternative to the standard lattice

approach. The work during 2005, within the group led by

Prof. D. O’Connor which currently includes R. Delgadillo,

F. García, H. Huet, S. Kürkçüoğlu, S. Murray and M. Panero,

has involved both theoretical and numerical aspects. On the

theoretical side, the research has been focused on the fuzzy

formulation of the and models, which

generalise the scalar field theories on a fuzzy sphere to a

supersymmetric setting. On the numerical side, the work has

been focused on the construction of the phase diagram for a

supersymmetric theory defined on the superplane, using

the regularisation given by the fuzzy physics approach.

1.2.10 Field Theories on Manin Plane

(T.R. Govindarajan)

Work continued on the extension of the twisted realisation

of symmetries to field theories on the Manin plane and the

implementation of conformal symmetries on the Manin plane

was progressed.

� .3 Independent Work by Research Scholars and Students

1.3.1 The Gross-Pitaevskii Formula and

Bose-Einstein Condensation

(S. Adams)

The main result obtained was the temperature dependent

Gross-Pitaevskii variational formula for the so-called Hartree

model in the large particle limit, where the interaction is

scaled such that the system is dilute. This research work

resulted in preprint [05-13]. The corresponding study of the

large time limit, which is interpreted as zero-temperature

limit, for finite number of particles and the large particle limit

in the product ground state is in publication. In December

preparation of the German Habilitation thesis at the University

of Leipzig was commenced.

1.3.2 Random Walks

(S. Adams & T.C. Dorlas)

Study of a new symmetrisation procedure for a system of

continuous time random walks on a lattice commenced.

Here the large particle limit was studied and a large deviation

principle derived. This research is still in progress.

1.3.3 Quantum Information

(A. Ghesquire)

The main area of work was in the field of quantum

information and in particular on the decoherence in a two-

particles system.

1.3.4 Nonzero Hall Conductivity

(M. Leitner)

To produce a nonzero Hall conductivity , a magnetic field

perpendicular to the plane has always been found necessary.

However relativistic systems in 2+1 dimensions with a time

reversal breaking term display a nonzero Hall conductivity

without external magnetic field. This fact has been attended

to very little but may become important. In my research

project, I study different types of such systems.

1.3.5 Bulk Physics

(M. Leitner)

For bulk devices with relativistic invariance, the use of

Feynman diagram techniques for the calculation of the Hall

conductivity is a good alternative to the condensed matter

physics’ approach and yields new geometric insights. Thus a

comparison of both approaches should be useful. This was

planned for a joint publication with Prof. Ruedi Seiler (TU-

Berlin). We discussed my draft in Berlin during three days

(16-18 March), but with his permission I finished the preprint

by myself [05-14] (cond-mat/0505428). On the 2nd of July,

I submitted the paper to Physical Review Letters (PRL). It

was rejected on the 14th of December. The two referees

didn’t accept the urgency requested by PRL but suggested

publication in Physical Review A. One of the referees argued

that my explanation of the non-integrality of relies on the

infinite depth of the Dirac so, therefore, this effect “is rather

48


unlikely” to be present in non relativistic solid state physics.

This was disproved immediately by the articles in Nature

(November 10) which reported on experiments with the new

material graphene, but the referee did not want to change his

mind. Graphene is a monolayer of carbon, easy to produce,

which for the very first time realises a 2+1 relativistically

invariant dimensional QFT (with some solid state analogue

for the speed of light). For this material, an “unusual Integer

Quantum Hall Effect” has been found where all the integer

values are shifted by 1/2. The authors argue that the zero

mass of the particles is responsible for the deviation from

integrality but my investigation of massive Dirac fermions

which produce an half-integer shows that this is not the

crucial point. Graphene is time reversal invariant, such that

the Hall effect depends on an external magnetic field. But

nonsymmetric materials with a built-in magnetic field are

conceivable which would be more useful than graphene.

1.3.6 Edge Physics

(M. Leitner & M.J. Gruber)

In two space dimensions, spontaneous edge currents are

predicted for edge devices in the absence of both an external

magnetic and electric field, when time and space inversion

symmetries are broken by magnetic impurities in the material.

In a strip geometry (with parallel edges of similar type), a net

edge current results from a proper difference between the

respective chemical potential on the two edges. The latter

is achieved, e.g., by applying an external electric field in the

plane, perpendicular to both edges. When boundaries at a

large distance are treated separately, particles with energies

between the lower gap barrier and the chemical potential

support an edge current. The difference in energy can be

interpreted as an internal voltage. The conductivity turns

out to switch between zero and sgn(m) (in natural units),

depending on the boundary condition. An updated version of

DIAS-STP-04-20 will appear in Letters of Mathematical Physics

in 2006.

1.3.7 Quantum Source Coding

(C. Morgan)

I began research as a pre-doctoral scholar in Quantum

Information Theory under the supervision of Prof. Tony Dorlas

in October 2005. Between October and the end of 2005

I have been concentrating on Quantum Source Coding, one of

the primary areas of interest in Quantum Information Theory.

Using the recommended text “Quantum Computation and

Quantum Information” by Nielson and Chuang and working

through the research paper “Source Coding in Quantum

Information Theory”, N. Datta and T. C. Dorlas, I have

established an understanding of the fundamental concepts

necessary for classical and quantum data compression.

1.3.8 Fuzzy Field Theory

(S. Murray)

Research work involved attempts at constructing a fuzzy

super complex projective space. It was decided to reformulate

the non-super case in terms of right actions as this may

facilitate the extension to supersymmetry. To this end scalars

on fuzzy and a Laplacian which gave the correct

continuum eigenvalues were constructed. Presently the case

of spinors is being considered.

1.3.9 Lie Algebras

(S. Ni Chiagain)

Yangians are a very important concept in mathematics.

They are built upon firm mathematical foundations, but

being relatively new, much about them is still unknown.

I’m particularly interested in the representation theory and

characters of these Yangians. As well as being of interest

mathematically, these Yangians are an effective tool for

solving problems in physics. In my Ph.D. work Yangians prove

to be very useful in the theory of integrable models.

In 2-dimensional integrable models, scattering matrices are

explicitly known. They are a function of rapidity. There’s a

phase for each pair of types of particles. Looking at the phase

difference between rapidities 1 and −1 gives a number,

which is a matrix element of A. This is related to the work

I’m doing at the moment.

49


In quantum field theory certain integrable models are

described in terms of pairs W, Y of Dynkin diagrams of simple

Lie algebras. The equations for these models are of the form

AU = V, where A = C(W)−1 ⊗ C(Y), C denotes Cartan

matrices, and W and Y are the Dynkin diagrams of simple Lie

algebras of ranks m and n respectively. Moreover U = logX

and V = log(1 − X), where X = (x11, … , xmn). There are

many possible choices for the Lie algebras W and Y, and each

choice leads to a different set of equations. It seems that the

resulting algebraic equations for X are solvable in terms of

roots of unity. We want to be able to solve these equations

in all cases. The case where both W and Y are of type A has

already been studied. In this case it is possible to solve the

equations using only the representation theory of Lie algebras.

Of particular interest to us is the case where W = Dm and

Y = An. Here the equations can be solved using the

representation theory of Lie algebras and their related

Yangians. In this case the characters of the group element g,

in certain representations, yield the matrix elements of U, V.

are solutions of

the equations AU = V. The ai must satisfy

and

Also and for .

The ultraviolet limit of an integrable model is a conformal

field theory. Some of the corresponding values of its effective

central charge, ceff, have been calculated. ceff is the minimal

value over α of c − 24hα, where

and L is an analytic continuation of the Rogers dilogarithm

function. We want to find all values of (c − 24hα). The fact

that the hα are all rational numbers has some important

consequences for the scattering matrices.

In a paper by Kirillov and Reshetikhin, (“Representations of

Yangians and Multiplicities of Occurrence of the Irreducible

Components of the Tensor Product of Representations of

Simple Lie Algebras”, J. Soviet Mathematics, 52 (1990)

3156), it is claimed that the characters of irreducible Yangian

representations satisfy a certain set of equations. All of our

calculations agree with this conjecture.

Some work was done towards finding a dimension formula

for Yangian representations, in the hope that this might

be helpful in finding a Yangian character formula. To date

no character formula has been found. However a recursive

dimension formula was found for the irreducible Yangian

characters of Dm.

In the future it is hoped to look at more complicated pairs

of Dynkin diagrams, for example (Bm,An) and (Cm,An). It

is known that these are closely related to the cases already

studied and it is hoped that this relationship can be used to

find the effective central charges in the B and C cases.

1.3.10 String Theory

(T. Tsukioka)

The formulation for string theory in higher-dimensional

spacetime has been investigated. Since the extended

spacetime involves two or more time coordinates, this

research might be a clue for understanding the origin of time

and spacetime itself. Gauge symmetries and supersymmetries

were emphasised in much of the research on field theory and

string theory.

In the context of the string unification, the relations between

string theories in various dimensional backgrounds have

been studied and it was also conjectured that all of these

string theories were regarded as different phases of an

underlying theory called M-theory in higher-dimensional

spacetime. Meanwhile, the idea of extra time dimensions,

which might be hidden dimensions, was suggested and

studied. From the algebraic point of view, 10+1-dimensional

supersymmetric algebra can be naturally derived from 10+2-

dimensional extended supersymmetric algebra. F-theory which

is formulated in 10+2-dimensional spacetime provides the

geometrical origin of type IIB string theory which can not be

directly connected to 10+1-dimensional M-theory. Ftheory

offers not only new avenues for the upper formulation of

type IIB string theory but also possibilities to consider a deep

concept about spacetime. However, it seems that F-theory is

a still provisional one, lacking clear dynamical principles.

The goal of this research is the construction of the unified

theory at the fundamental level which should predict not only

the dimensionality but also the signature of our spacetime.

50


With collaborator Y. Watabiki it is proposed that string models

be used as devices to formulate the physics involving extra

time coordinates and to search for a fundamental theory with

an underlying complex nature of spacetime which would be

linked to M-theory and F-theory from a higher-dimensional

and more unified point of view including extra time-like

dimensions.

� .4 Work by Research Associates

1.4.1 The Quantum Hall Effect

(B. Dolan & Cliff Burgess)

Dr. Dolan has continued an ongoing collaboration with Cliff

Burgess of McMaster University, Hamilton, Ontario, Canada

on duality and the modular group in the quantum Hall effect.

The role of the modular group in quantum Hall bi-layer

systems is currently being developed.

1.4.2 Non-Commutative Geometry

(B. Dolan, A. Balachandran, C Nash, D. O’Connor, &

P. Presnajder)

A programme to develop closed matrix algebras

approximating compact manifolds, one aim of which is

numerical computation, has continued and been extended

to cover complex quadrics. The analysis to supersymmetric

matrix algebras is currently being extended, focusing at the

moment on the supersymmetric fuzzy sphere. The finite

matrix algebra geometry of the fuzzy sphere as a model for

the event horizon of a 4-dimensional black hole has also been

developed.

1.4.3 Higher Dimensional Field Theories

(D.H. Tchrakian)

Work was carried out in the following areas: Higher

dimensional field theories, including dimensional descent:

Abelian and non Abelian gauged Higgs and Skyrme field

theories, including their gravitating cases; Special emphasis

on higher curvature gravitational terms, as well as inclusion

of (negative) cosmological constant. The following specific

problems were investigated.

nConstruction of a U(1) (Maxwell) gauged Skyrmion in 3

+ 1 dimensions. This is a stable soliton when the electric

potential vanishes, and is quasistable otherwise. In the

second case we succeeded in finding a static spinning

finite energy lump. This is the only such example that

does not involve stationary fields.

nStudy continued of the systems consisting of two

distinct gravitating members of the Yang–Mills hierarchy,

going beyond the first two members of the Yang–Mills

hierarchies in dimensions d = 6, .., 12, extending our

previous results restricted to the first two members of

this hierarchy, and to dimensions d = 6, .., 8. Using fixed

point analysis combined with numerical techniques, we

established that the various solutions are characterised by

three types of fixed points, at zero and infinity, Reissner–

Nordstrøm type, and what we called a ‘conical’, this last

one being a feature exclusively in dimensions 5, 9, .. etc.

In this study, we restricted to Einstein–Hilbert gravity, and

to regular solutions only.

Again in this area, and restricting to Einstein–Hilbert

gravity, we studied such systems in the presence

of a negative cosmological constant. The results

are qualitatively similar to those of the usual 3 + 1

dimensional case, except that the peculiar accident in the

latter case allowing finite mass solution with monopole-

like rather than sphaleronlike asymptotic behaviour. Here,

only the latter type exist, except in dimensions where

a Pontryagin charge is defined, when their asymptotic

behaviour is instanton like.

Finally, again in this area, we studied higher dimensional

gravitating Yang–Mills systems, but with the gravitational

term being a member of the gravitational hierarchy

(e.g. Gauss–Bonnet). It was shown that the qualitative

properties of the usual 4 dimensional case repeated

modulo 4p dimensions.

nConstructed ‘monopoles’ in 4p − 1 dimensions, employing

the 2p-th members of the Yang–Mills hierarchy. The

corresponding dyons were also discussed, and in a

subclass of these models its existence is guaranteed.

This project is ongoing and at present we are gravitating

these systems. It is planned also to apply these objects to

brane theories.

5�


nStarted on the construction of axially symmetric instantons

in all even Euclidean dimensions, and of axially symmetric

monopoles in all odd Euclidean dimensions. In the latter

case we have also considered monopole antimonopoles,

and monopole antimonopole chains.

nStarted the construction of axially symmetric instantons

of the 4 dimensional Yang-Mills system, which unlike

Witten’s axially symmetric instantons are labelled by a

vortex like charge n. This project is ongoing.

2 Publications

2 .� Papers in Refereed Journals

[1] X. Martin, R. Sorkin & Denjoe O’Connor: The random

walk in generalised quantum theory. Phys. Rev. D

7� (2005) 024029.

[2] T. C. Dorlas & J. V. Pulé: Long cycles in a perturbed mean

field model of a Boson gas. J. Stat. Phys. �6 (2005) 1–34.

[3] M. Christandl, N. Datta, T. C. Dorlas, A. Ekert, A. Kay &

A. J. Landahl: Perfect transfer of arbitrary states in

quantum spin networks. Phys. Rev. A 7� (2005), 032312.

[4] M. Panero: A numerical study of confinement in compact

QED. JHEP 05 (2005) 066, [arXiv:hep-lat/0503024].

[5] F. Gliozzi, S. Lottini, M. Panero & A. Rago: Random

percolation as a gauge theory. Nucl. Phys. B7�9 (2005)

255-274, [arXiv:cond-mat/0502339].

[6] M. Caselle, M. Hasenbusch & M. Panero: Comparing the

Nambu-Goto string with LGT results. JHEP 03 (2005) 026,

[arXiv:heplat/0501027].

[7] B.P. Dolan: Quantum Black Holes: the event horizon as a

fuzzy sphere. JHEP 02 (2005) 008 [arXiv: hepth/0409299].

[8] T. Tsukioka &Y. Watabiki: Quantization of Neveu-

Schwarz-Ramond superstring model in 10+2-dimensional

spacetime. Int. J. Mod. Phys. A20 (2005) 5807.

[9] F. Laytimi & W. Nahm: A vanishing theorem. Nagoya

Math. J. �80 (2005) 35-43.

2 .2 Papers in Conference Proceedings

[10] T. C. Dorlas & R. F. O’Connell: Quantum Zeno and anti-

Zeno effects: an exact model. Proceedings of SPIE (The

International Society for Optical Engineering), 5436

(2004) 194.

[11] F. Garcia Flores, Denjoe O’Connor & X. Martin: Simulating

the scalar field on the fuzzy sphere. Proceedings of

Science LAT2005 (2005) 262, [heplat/0601012].

[12] J. Medina, W. Bietenholz, F. Hofheinz & Denjoe

O’Connor: Field theory simulations on a fuzzy sphere –

an alternative to the lattice. Proceedings of Science

LAT2005 (2005) 263, [heplat/0509162].

[13] M. Billó, M. Caselle, M. Hasenbusch & M. Panero: QCD

string from D0 branes. Proceedings of Science LAT2005

(2005) 309, [arXiv:heplat/0511008].

[14] M. Panero: Studying glueball masses in non-Abelian LGT

with the LW algorithm. Proceedings of Science LAT2005

(2005) 294, [arXiv:heplat/0509006].

[15] M. Panero: A numerical study of a confined Q anti-Q

system in compact U(1) lattice gauge theory in 4D.

Nucl. Phys. Proc. Suppl. �40, 665 (2005),[arXiv:hep-

lat/0408002].

2 .3 Preprints

DIAS-STP-

[05-01] M. Caselle, M. Hasenbusch & M. Panero: Comparing

the Nambu-Goto string with LGT results.

[05-02] F. Gliozzi, S. Lottini, M. Panero & A. Rago: Random

percolation as a gauge theory.

[05-03] A.P. Balachandran, K.S. Gupta & S. Kürkçüoğlu:

Waves on non-commutative spacetimes.

[05-04] M. Panero: A numerical study of confinement in

compact QED.

[05-05] T.C. Dorlas, P.A. Martin & J.V. Pulé: Long cycles in a

perturbed mean-field model of a Boson gas.

52


[05-06] B. Dolan: N=2 Supersymmetric Yang-Mills and the

quantum Hall effect.

[05-07] B. Dolan: Meromorphic scaling flow of N = 2

supersymmetric SU(2) Yang-Mills with matter.

[05-08] T.C. Dorlas & V.B. Priezzhev: Finite-time current

probabilities in the asymmetric exclusion process

on a ring.

[05-09] M. Panero: Studying glueball masses in non-abelian

LGT with the LW algorithm.

[05-10] M. Billo, M. Caselle, M. Hasenbusch & M. Panero:

QCD string form D0 branes.

[05-11] M. Caselle, M. Hasenbusch & M. Panero: On the

effective string spectrum of the tridimensional Z2

gauge model.

[05-12] A.P. Balachandran, S. Kürkçüoğlu & S. Vaidya:

Lectures on fuzzy and fuzzy SUSY physics.

[05-13] S. Adams, J.B. Bru & W. König: Large systems of

path-repellent Brownian motions in a trap at positive

temperature.

[05-14] M. Leitner: Zero-field Hall effect in (2 + 1)-

dimensional QED.

3 Programme of Scholarly Events

3 .� Lectures Organised by The School

nC.G. Callan Jr. (Princeton) Topics in theoretical biology.

16 May

nS. Fredenhagen (ETH, Zurich) D-branes in CFT

backgrounds. 12 July

nO. Lisovyy (Université Angers, France) Correlations in the

2-D Ising model on a finite lattice. 12 July

nM. Shaposhnikov (EPFL, Lausanne) Brane worlds and the

strong CP problem. 21 June

nT. Strobl (University Jena, Germany) General p-form gauge

theories: physics and mathematics. 12 July

3.1.1 Seminars Organised by The Theoretical Particle

Physics Group

nO. Andreev (Landau Institute for Theoretical Physics,

Moscow) Regge behaviour in gauge/gravity duality.

14 April

nA. Chakrabarti (EP, Palaiseau, France) Aspects of new

classes of braid matrices for higher dimensions.

10 November

nK. Gawedzki (ENS, Lyon, France) Turbulent transport and

integrable chaos. 8 December

nT.R. Govindarajan (Institute for Mathematical Sciences,

Chennai, India) Non-commutative spacetime and unitary

quantum physics. 21 October

nT. Ichinose (Kanazawa University, Japan) On path integral

for the radial Dirac equation. 12 October

nM.K.H. Kiessling (Rutgers University, Piscataway, USA)

Quest for an alternate QED: the Born legacy. 7 July

nG. Landi (Universita di Trieste, Italy) Non-commutative

instantons on non-commutative spheres. 7 April

nE. Langmann (Royal Institute of Technology, Stockholm,

Sweden) Non-commutative field theories and exactly

solvable systems. 1 December

nO. Lechtenfeld (University Hannover, Germany) Time-space

non-commutative solitons. 29 September

nV.P. Nair (City College of the CUNY, New York) Twistors,

gluons and gravitons. 2 December

nA. Perelomov (Institute for Theoretical and Experimental

Physics, Moscow) The systems of Calogero-Sutherland

type and their generalizations. 27 October

nM.I. Polikarpov (ITEP, Moscow) Numerical study of QCD

with dynamical fermions on the lattice. 13 January

nM.I. Polikarpov (ITEP, Moscow) Confinement problem from

the lattice point of view. 14 January

nR. Poghossian (Yerevan Physics Institute, Armenia)

Instantons in N=2 super Yang-Mills theory. 21 April

53


nB. Sathiapalan (Institute for Mathematical Sciences,

Chennai, India) Loop variables: a proposal for a

background independent formulation of string theory.

17 November

nK. Takenaga (Osaka University, Japan) Higgs scalars in

gauge-Higgs unification. 19 May

nS. Vaidya (Indian Institute of Science, Bangalore, India)

Lorentz-invariant non-commutative QFT. 24 October

nJ.C. Varilly (Universidad de Costa Rica, San Jose, Costa

Rica) A matrix representation of the combinatorics of

renormalization. 24 November

nD.V. Vassilevich (Max-Planck-Institut, Leipzig & St.

Petersburg State University, Russia) Heat kernel expansion

in non-commutative theories (On hearing the shape of a

non-commutative drum). 28 April

nJ. Verbaarschot (SUNY, Stony Brook, USA) Random

matrices, QCD and Toda lattices. 3 November

3 .2 Symposia, Conferences, Workshops Organised

The Annual O’Raifeartaigh Lectures in honour of the late

Professor Lochlainn O’Raifeartaigh were inaugurated at the

Irish Quantum Field Theory (IQFT) Meeting in Trinity College

Dublin on 20 May.

The lectures sponsored by DIAS and delivered by leading

specialists will form part of the Annual IQFT Meeting.

The DIAS Summer Lecture Series in conjunction with Trinity

College Dublin was held from 13 to 17 June. The speaker

was Prof. P. Brosnan (SUNY Buffalo) who talked on Motives,

periods and Zeta functions.

J .T . Lewis Memorial Conference. A conference, organised

by CNRI and the Institute to honour the memory of the

late J.T. Lewis, his contributions to mathematics and its

applications was held from 14-17 June in the Dublin Institute

of Technology.

The following talks were presented:

nDavid Applebaum (University of Sheffield)

Infinite-dimensional Ornstein-Uhlenbeck processes with jumps.

nEmmanuel Buffet (Dublin City University)

Parrondo’s phenomenon.

nJennifer Chayes (Microsoft Research, Redmond)

Phase transitions in computer science.

nNilanjana Datta (University of Cambridge)

Compression of data from quantum information sources.

nAernout van Enter (University of Groningen)

First-order transitions in classical vector models.

nDavid Evans (Cardiff University)

Modular invariants and operator algebras.

nGeorge W. Ford (University of Michigan)

Quantum distribution functions.

nChristopher Fuchs (Bell Labs.)

Minimal maximally-quantum alphabets.

nAyalvadi Ganesh (Microsoft Research, Cambridge)

Thresholds for the contact process on finite graphs.

nRobin Hudson (Nottingham Trent University)

A net of infinitesimal rotations and its second quantisation.

nArthur Jaffe (Harvard University)

On the unreasonable effectiveness of physics in mathematics.

nFrank Kelly (University of Cambridge)

Stability, routing and congestion control.

nChristopher King (Northeastern University)

Noise correction for quantum systems in a

friendly environment.

nHans Maassen (Catholic University of Nijmegen)

Purification of quantum trajectories and dark subspaces.

nVadim Malyshev (INRIA)

Problems in mathematical statistical chemistry.

nTaku Matsui (Kyushu University)

BEC and NESS.

54


nDerek McAuley (Intel Research, Cambridge)

How I learned to love large deviations.

nCathleen Morawetz (New York University)

Some conservation laws and their consequences.

nBruno Nachtergaele (University of California)

What’s new in quantum spin systems?

nRobert O’Connell (Louisiana State University)

Do the laws of thermodynamics hold in the quantum

regime?

nNeil O’Connell (University College Cork)

Littelmann paths and Brownian paths.

nEugene Pechersky (Russian Academy of Sciences)

The car traffic and a single server queuing system.

nCharles-Edouard Pfister (EPF Lausanne)

From thermodynamics to statistical mechanics. A large

deviations approach to classical lattice systems.

nVyatcheslav Priezzhev (JINR, Dubna)

Asymmetric exclusion process: exact solutions and

perspectives.

nAnatolii Puhalskii (University of Colorado at Denver)

Queues and random graphs.

nJoe Pulé (University College Dublin)

Long cycles in a perturbed mean field model of a Boson gas.

nJohn Rawnsley (University of Warwick)

Homomorphisms of deformation quantisation.

nMary Beth Ruskai (Tufts University)

The complementary role of POVM’s and ensembles in the

capacity of quantum channels.

nRaymond Russell (Corvil)

Measuring entropy: from statistical mechanics to IP certainty.

nGeoffrey Sewell (University of London)

Can the quantum measurement problem be resolved

within a standard Schroedinger dynamical framework?

nRobert Shorten (National University of Ireland, Maynooth)

A story of rational functions of a complex variable,

stability theory of differential equations with discontinuous

right hand side, and a meeting with John Lewis.

nWolodymyr Skrypnik (NAS of Ukraine)

Quantum systems with exact ground states and

associated random dynamics.

nYuri Suhov (University of Cambridge)

Anderson localisation for multi-particle lattice sytems.

nAubrey Truman (University of Wales, Swansea)

Real complex turbulence for Burgers equation.

nAndre Verbeure (Catholic University Leuven)

On Bose condensation.

nNikita Vvedenskaya (Russian Academy of Sciences)

Dynamic routing and large deviations.

nWilhelm von Waldenfels (University of Heidelberg)

The Hamiltonian of the damped oscillator.

nStephen Wills (University College Cork)

On the construction of quantum stochastic processes.

nAndreas Winter (University of Bristol)

Quantum information can be negative.

nDamon Wischik (University of London)

The calculus of Hurstiness.

nMarc Yor (University of Paris)

Back to Wiener integrals.

nValentin Zagrebnov (University of Marseille)

Superradiant Bose-Einstein condensation.

In April the Institute and the Hamilton Mathematics Institute,

Trinity College Dublin, jointly established a distinguished

lecture series in honour of the late professor J.T. Lewis.

The first John T. Lewis Lectures were delivered by Professor

J. Fröhlich, E.T.H. Zurich as follows :

nThermodynamics and statistical mechanics 21 November

nBose gases and boson stars 21 November

55


nCFT, TFT and others 23 November

nTheory of atoms and molecules coupled to the quantized

radiation field 25 November

The Winter Symposium was held on 14th and 15th

December. Lectures were given as follows:

nA. Fitzgibbon (Microsoft Research, Cambridge)

Computer graphics and computer vision: Holywood’s new

double act.

nO. Lisovyy

Isomonodromic deformations and holonomic quantum fields.

nT. Dorlas

Quantum coding.

nN. Ray (University of Manchester)

Iterated projective bundles.

nM. Leitner

Graphene and the relativistic Quantum Hall effect.

nT. Futamase (University of Tohoku)

Weak lensing study of a cluster mass profile, using the

Subaru telescope, and its implications for the CDM

structure formation scenario.

nD. Wraith (NUI Maynooth)

Stable bundles with positive Ricci curvature.

nA. Beardon (University of Cambridge)

Groups of conformal maps.

Statutory Public Lecture

The Statutory Public lecture was delivered by Professor

Ph. A. Martin (L’Ecole Polytechnique Fédérale de Lausanne) on

Bose-Einstein Condensation: A Journey to Ultracold Matter,

3 March in University College Dublin, Belfield.

4 Presentations at Conferences or Seminars

4 .� Talks and Papers Presented

W. Nahm:

nTalk “How good is the Bethe ansatz in integrable QFT?”

at Department of Mathematics, University of Glasgow

24 January.

nTalk “Mirror symmetry for cohomology with values in

vector bundles” at London Mathematical Society Durham

Symposium on Geometry, Conformal Field Theory and

String Theory, 22nd July - 1st August.

D. O’Connor:

nTalk “Supersymmetric models in the fuzzy approach”,

Humboldt University, Berlin, 3 May.

S. Adams:

nTalk “Large deviation principles for systems of Brownian

motions under symmetrised distributions” at Workshop

Interacting Random Processes – Satellite of the

International Symposium of Mathematical Science at

University of Leipzig, Germany, 30 September - 6 October.

S. Kürkçüoğlu:

nTalk “Recent developments on non-commutative

diffeomorhisms and gravity” at Non-commutative

Geometry and Quantum Physics Meeting, Chennai India,

14 July - 4 August.

nTalk “Waves on non-commutative spacetimes” at

12th Irish Quantum Field Theory Meeting,

Trinity College Dublin, 20-21 May.

n“Waves on non-commutative spacetimes”, Poster

presentation at IRCSET National Symposium, Croke Park,

Dublin, 3 November.

M. Leitner:

nTalk “Zero field (Quantum) Hall effect and spontaneous

edge currents ”at 12th Irish Quantum Field Theory

Meeting, Trinity College Dublin, 20-21 May.

56


S. Murray:

nInformal presentation “Representation theory of the

Lie supergroups Osp(4,1) and SU(2,1)” at International

Workshop on Fuzzy Physics and Non-commutative

Geometry, CINVESTAV, Mexico City, 1-30 June.

S. Ni Chiagain:

nPoster on “Algebraic K-theory and partition functions

in conformal field theory”, at IRCSET symposium,

Croke Park, Dublin, 3 November.

nPoster on “Algebraic K-theory and partition functions

in conformal field theory” at Symposium, “Geometry,

Conformal Field Theory and String Theory”, Durham,

22 July - 1 August.

M. Panero:

nInvited talk “Numerical simulations on the fuzzy sphere”,

at Non-commutative Geometry and Quantum Physics

workshop, Institute of Mathematical Sciences

(Chennai, India), 18 July 2005.

nPoster contribution “Studying glueball masses in non-

Abelian LGT with the LW algorithm”, at Lattice 2005, XXIII

International Symposium on Lattice Field Theory, Trinity

College Dublin, 26 July.

nInvited talk “Confinement and string effects in Abelian

LGT”, at Tours University, France, 6 October.

nInvited talk “Effective string predictions and numerical

results in the confining regime of Abelian LGT” at

Humboldt University, Berlin, 8 November.

T. Tsukioka:

nTalk “Bosonic String and Superstring Models in 26+2

and 10+2-dimensional Spacetime”, at Rudjer Boskovic

Institute, Zagreb, Croatia, 13 May.

5 Collaboration with the Wider Research Community

5 .� National

Lecture Courses and Workshops

T.C. Dorlas:

nCourse for undergraduates on Quantum Spin Systems for

students from TCD and UCD (Academic year 2004-2005).

nCourse for undergraduates on Quantum Computing and

Information (Academic year 2005-2006).

nCo-organised the John T. Lewis Memorial Conference in

D.I.T., 14-17 June 2005.

nThe Winter Symposium was organised in collaboration

with the IMS, on 15-16 December.

S. Adams:

nA series of seven talks on “Brownian motion, Large

deviation techniques for topological vector spaces and

symmetrised system of continuous time random walks”

were delivered during the year.

M. Panero:

nWork has been carried out in collaboration with

Dr. B.P. Dolan from N.U.I. Maynooth.

Staff Acting as External Supervisors

W. Nahm:

nSupervised minor theses of Patrick Connell and Donough

Regan (both UCD). Both theses concerned Conformal

Quantum Field Theory in Two Dimensions.

Denjoe O’Connor

nPh.D. supervisor for R. Delgadillo Blando, J. Medina,

F. Garcia and I. Huet. (Cinvestav, Mexico).

57


Staff Acting as External Examiners

Denjoe O’Connor:

nExternal Examiner for Ph.D. of Vivien De Beaucé, Trinity

College Dublin.

nExternal Examiner for M.Sc. of Neil Butler, Dublin Institute

of Technology.

Research Associates

nAT&T: N. Duffield

nDCU: E. Buffet, J. Burzlaff, E. O’Riordan, E. Prodanov

nDIT: T. Garavaglia, D. Gilbert, M. Golden, B. Goldsmith,

P Houston, M.J. Tuite

nIntern. Centre For Theoretical Physics, Trieste:

J. Chela-Flores

nIT, Carlow: D. O Sé

nIT, Tallaght: N. Gorman

nLudwig-maximiliansuniversit ät München: I. Sachs

nMeteorological Service: P. Lynch

nNUI, Cork: N. O’Connell, M. Vandyck

nNUI, Galway: J. Burns, M.J. Conneely, M.P. Tuite

nNUI, Maynooth: M. Daly, B. Dolan, D. Heffernan, C. Nash,

A. O’Farrell, J.A. Slevin, D.H. Tchrakian

nOpen University: A.I. Solomon

nOxford University: R.G. Flood

nTCD: P.S. Florides, J. Miller, S. Sen, S. Shatashvili,

D. Weaire

nUniversiteit Leiden: F. Freire

nUCD: A. Ottewill, J.V. Pulé, W. Sullivan, P. Watts

nUL: S. O’Brien

nUnaffiliated: G.M. O’Brien, D. Ó Mathuna

5 .2 International

M. Panero:

Work has been carried out in collaboration with Prof.

A. P. Balachandran from Syracuse University (Syracuse,

USA), Prof. W. Bietenholz from Humboldt University (Berlin,

Germany), Dr. M. Billó from Turin University (Turin, Italy), Prof.

M. Caselle from Turin University (Turin, Italy), Prof. F. Gliozzi

from Turin University (Turin, Italy), Prof. T. R. Govindarajan

from the Institute of Mathematical Sciences (Chennai, India),

Dr. M. Hasenbusch from Pisa University (Pisa, Italy), Dipl. Phys.

S. Lottini from Turin University (Turin, Italy), Dr. X. Martin

from Tours University (Tours, France), Dr. A. Rago from Milan

University (Milan, Italy) and Dipl. Phys. J. Volkholz from

Humboldt University (Berlin, Germany).

Visiting Researchers

Short visits (up to one week):

nA.P. Balachandran (Syracuse, N.Y.) 13-20 March

nJ.-B. Bru (Johannes Gutenberg University, Germany)

24-30 July

nC. Callan (Princeton University) 16 May

nN. Datta (University of Cambridge) 8-11 May

nH. Eberle (University of Bonn) 18-25 February

nD. Evans (Cardiff University) 31 January - 4 February

nJ. Fröhlich (ETH, Zurich) 19-26 November

nM. Fukuda (Cambridge) 14-18 June

nK. Gawedzki (ENS-Lyon, France) 8-10 December

nJ. Guven (Univ. Nac. Autonoma de Mexico) 20-23 January

nT. Ichinose (CIRM, Marseille & Japan) 8-13 October

nG. Landi (Trieste, Italy) 6-9 April

nE. Langmann (KTH, Sweden) 29 November - 2 December

nO. Lechtenfeld (Hannover University)

26 September - 1 October

58


nPh. A. Martin (L’Ecole Polytechnique Fed. de Lausanne)

28 February - 4 March

nV.P. Nair (CUNY, New York) 29 November - 3 December

nR. Poghossian (Yerevan Physics Institute, Armenia)

13-15 April

nM. Polikarpov (Inst. Theor. & Exper. Physics, Moscow)

12-15 January

nP. Presnajder (Bratislava, Slovakia) 16-26 March

nB. Sathiapalan (Institute of Mathematical Sciences,

Chennai, India) 15-19 November

nY. Suhov (University of Cambridge) 18-25 April

nY. Suhov (University of Cambridge) 8-11 May

nK. Takenaga (Osaka, Japan) 16-22 May

nS. Vaidya (Indian Institute of Science, Bangalore)

18-25 October

nJ. Varilly (University of Costa Rica) 23-29 November

nJ. Volkholz (Berlin) 11-17 December

nJ. Verbaarschot (Stony Brook, USA) 2-6 November

Long visits:

nP. Brosnan (SUNY Buffalo & UBC Canada) 12-21 June

nA. Chakrabarti (Ecole Polytechnique, Palaiseau, France)

9-23 November

nD.E. Evans (Cardiff University) 12-23 September

nJ. Fjelstad (Cardiff University) 12-23 September

nG.W. Ford (Michigan University) 27 May - 4 July

nT. Futamase (Tohoku University, Japan) 13-21 December

nT.R. Govindarajan (Chennai, India)

23 August - 12 December

nBo-Yu Hou (Northwest University, Xi’an, P.R. China)

22 October - 23 December

nM. Kiessling (Rutgers University) 1-15 July

nJ. Medina Garcia (Cinvestav, Mexico) 27 April - 7 May

nJ. Medina Garcia (Cinvestav, Mexico) 24 July - 8 August

nF. Laytimi (University of Lille) 8-19 January

nX. Martin (University of Tours) 10-21 March

nX. Martin (University of Tours) 26 October - 5 November

nX. Martin (University of Tours) 15-23 December

nP. Miranda (Mexico) 7-17 July

nR.F. O’Connell (Louisiana State University) 3 June - 31 July

nA. Perelomov (Bonn, Germany)

29 September - 29 November

nA. Povolotsky (Dubna) 5-14 December

nJ. Santiago (Mexico) 7-17 July

nW. Skrypnik (Kiev, Ukraine) 5-19 June

nY. Suhov (University of Cambridge) 19 March - 5 April

nP. Teotonio Sobrinho (Sao Paulo, Brazil) 12-20 March

nP. Castro Villarreal (Cinvestav, Mexico)

14 April - 1 September

nV. Zagrebnov (Marseille, France) 5-17 May

Research Visits by School Staff

T.C. Dorlas:

nResearch visit to Centre de Physique Théorique, Marseille,

18-23 July.

nResearch visit to Statistical Laboratory, University of

Cambridge, 4-9 December.

W. Nahm:

nResearch visit to Glasgow University, 24-25 January.

nResearch visit to Lille University, 3-9 April.

59


nResearch visit and Conference attendance, Lille University,

3-22 May.

nResearch visit to Lille University, 29 May - 5 June.

Denjoe O’Connor:

nResearch visit to CINVESTAV, Mexico and Ph. D. defence

of Pavel Castro-Villarreal, 25 January - 5 March.

nResearch visit to Berlin, 3-4 May.

nResearch visit to University of Tours, France,

29 November - 2 December.

S. Adams:

nResearch visit to Warwick University 3-25 January.

nCombined Research visit to University of Leipzig, University

of Erlangen and University of Munich 2-22 February.

nCombined Research visit and conference attendance at

the Max Planck Institute Leipzig and the University of

Mainz 5 May - 21 June.

nResearch visit to Prague and Leipzig 23 June - 5 July.

nResearch visit to University of Leipzig (Germany) and

Erwin Schrödinger Institute Vienna (Austria). Started the

Habilitation at University of Leipzig. 10-19 September.

nResearch visit to Charles University, Prague,

18-29 November.

nResearch visit to Prague and Leipzig 2-16 December.

F. Garcia Flores:

nResearch visit to University F. Rabelais, Tours, France,

6-28 February.

nResearch visit to University of Tours, France,

28 November - 2 December.

S. Kürkçüoğlu:

nResearch visit to Middle East Technical University, Ankara,

Turkey. 16-24 August 2005.

M. Leitner:

nResearch visit to Technical University, Berlin, 16-21 March.

nResearch visit and Conference attendance, Lille University,

3-22 May.

M. Panero:

nResearch visit to Tours University, Tours, France,

28 September - 10 October.

nResearch visit to Humboldt University, Berlin,

7-14 November.

T. Tsukioka:

nResearch visit to Rudjer Boskovic Institute, Zagreb, Croatia,

11-18 May.

6 Participation in Outside Committees

W. Nahm:

One of the organisers of the XXIII International Conference of

Differential Geometric Methods in Theoretical Physics, Tianjin,

China, 20-26 August. The conference had been suggested

by Prof. Chern (the father of the Chern classes), but

unfortunately he passed away at the beginning of the year.

S. Kürkçüoğlu:

Member of the organising committee for the International

Workshop on Fuzzy Physics and Non-commutative Geometry

held at Cinvestav Mexico City, 1-30 June.

60


7 Attendance at External Conferences, Workshops, Meetings and Lectures

7 .� Conferences/Workshops/Scientific Meetings Attended

T.C. Dorlas:

nConference in memory of Prof. John T. Lewis, Dublin

Institute of Technology, 14-17 June.

W. Nahm:

nLMS Durham Symposium, 23-28 July.

nXXIII International Conference “Differential Geometric

Methods in Theoretical Physics”, 18-29 August.

Denjoe O’Connor:

n“Fuzzy Physics and Non-Commutative Geometry”

Workshop, CINVESTAV (Mexico City, Mexico),

1 June - 4 July.

nXII Irish Quantum Field Theory Meeting 2005, Trinity

College Dublin, 20-21 May.

n“XXIII International Symposium on Lattice Field Theory”,

Trinity College Dublin, 25-30 July.

n“Renormalization Group 2005” Conference, Helsinki

University, 29 August - 1 September.

S. Adams:

nDFG Conference, Research Center, Berlin, 4-8 April.

nEUROMATH Conference, Prague, 2-10 September.

n“Workshop on Random Interfaces and Directed Polymers”

Max Planck Institute in Leipzig, Germany

11-19 September.

nWorkshop “Interacting Random Processes” – Satellite of

the International Symposium of Mathematical Science,

University of Leipzig, Germany, 30 September - 6 October.

nWorkshop “Bose-Einstein Condensation and Quantum

Information” Erwin Schrödinger Institute, Vienna, Austria

17-21 December.

R. Delgadillo-Blando:

nXII Irish Quantum Field Theory Meeting 2005,


F. Garcia Flores:


Workshop, CINVESTAV, Mexico, 30 May - 29 June.

n“XXIII International Symposium on Lattice Field Theory”,

Trinity College Dublin, 25-30 July.

S. Kürkçüoğlu:


Workshop, CINVESTAV, Mexico, 30 May - 29 June.

nNon-commutative Geometry and Quantum Physics

Meeting, Chennai India, 14 July - 4 August.

nIRCSET National Research Symposium, Dublin,

3 November.

M. Leitner:

n“Journées de Geometrie Algebrique”Conference,

Lille, France, 20-21 May.

S. Murray:


Trinity College, Dublin, 20-21 May.


Workshop, CINVESTAV, Mexico City, 4 June - 4 July.

nAnnual Theory Meeting, Grey College, Durham,

19-21 December.

S. Ní Chiagain:

nLondon Mathematical Society Symposium “Geometry,

Conformal Field Theory and String Theory”, Durham,

22 July - 1 August.

6�


M. Panero:



nJ. T. Lewis Memorial Conference, Dublin Institute of

Technology, 14-17 June.


Workshop, CINVESTAV (Mexico City, Mexico),

23 June - 2 July.

n“Non-commutative Geometry and Quantum Physics”

Workshop, Institute of Mathematical Sciences

(Chennai, India), 12-24 July.

n“Lattice 2005”, XXIII International Symposium on Lattice

Field Theory, Trinity College Dublin 25-30 July.

n“Lattice Field Theory Workshop”, Turin University

(Turin, Italy), 2-9 December.

T. Tsukioka:

n“Lattice 2005”, XXIII International Symposium on Lattice

Field Theory (Lattice 2005), Trinity College Dublin,

25-30 July.

nCorfu Summer Institute on Elementary Particle Physics

(CORFU 2005), Corfu, Greece, 21-26 September.

7 .2 Lectures and Organisational Meetings Attended

T.C. Dorlas:

nMeeting with the Scientific Advisor to the Government,

Dr. Barry McSweeney, 18 April.

nInstruction meeting on PMDS, 1 September.

nMeetings with the Scientific Advisor to the Government,

Dr. Barry McSweeney, and the Director of SFI, Dr. William

Harris, 7 September.

nWorkshop organised by IRCSET on “Developing Graduate

Schools in Ireland”, Tuesday 27th September.

nStatutory Public Lecture of the School of Cosmic Physics,

30 September.

nSeries of lectures by Prof. Jürg Fröhlich (Zürich),

21, 23, 25 November.

S. Kürkçüoğlu:

nAttended John T. Lewis Lectures by Professor J. Fröhlich,

21-25 November.

M. Panero:

nMotives, Periods and Zeta Functions by Prof. P. Brosna,

University of British Columbia, Vancouver, Canada,

13-17 June.

nJohn T. Lewis Lectures by Prof. J. Fröhlich, ETH, Zurich,

Switzerland, 21-25 November.

8 Research Grants/ External Funds Secured

T.C. Dorlas:

nIn collaboration with K. Duffy and B. Goldsmith, E50,000

was obtained from SFI for organising the John Lewis

Memorial Conference, 14-17 June.

Denjoe O’Connor:

Ongoing:

nEmbark Initative Postdoctoral Fellowships were awarded to

Subrata Bal and David Garcia Alvarez.

n2003-2006: Basic Research Grant from Enterprise Ireland

for E189,000

n2004-2006: An Embark Initative Postdoctoral Fellowship

to Seçkin Kürkçüoğlu funded by IRCSET for a period of

three years with effect from 1 October.

nUlysses Research Visits to France (for 2005) E2,580.

n2002-2006: subnode of EU Research Training Network

E33,000.

nA grant for research into high performance computing in

Germany was obtained in conjunction with M. Panero and

W. Bietenholz.

62


9 Honours/Awards/ Special Achievements Received

T.C. Dorlas:

nReappointed as Honorary Professor in the Department of

Mathematics at the University of Wales Swansea (from

March 2005).

S. Kürkçüoğlu:

nRecipient of the 2005 Doctoral Dissertation Prize of

Syracuse University, Syracuse, NY, USA.

10 Public Awareness Activities

�0 .� Public Lectures

W. Nahm:

nTalk “Integrable systems, 19th and 21st century”

at symposium on ‘The legacy of William Rowan Hamilton:

Symplectic and Contact Geometry and Hamiltonian

Systems’, 29 September - 1 October.

�0 .2 Contribution to the Media

T.C. Dorlas:

nWrote a reply to the OECD report on Research in Ireland.

nArticle for the “Irish Scientist Year Book 2005”entitled

Quantum secrecy, quantum clarity.

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